Match Wits with The Hardy BoysÂ®!

Collect the Original Hardy Boys Mystery StoriesÂ®

by Franklin W. Dixon

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The Tower Treasure
The House on the Cliff
The Secret of the Old Mill
The Missing Chums
Hunting for Hidden Gold
The Shore Road Mystery
The Secret of the Caves
The Mystery of Cabin Island
The Great Airport Mystery
What Happened at Midnight
While the Clock Ticked
Footprints Under the Window
The Mark on the Door
The Hidden Harbor Mystery
The Sinister Signpost
A Figure In Hiding
The Secret Warning
The Twisted Claw
The Disappearing Floor
The Mystery of the Flying Express
The Clue of the Broken Blade
The Flickering Torch Mystery
The Melted Coins
The Short-Wave Mystery
The Secret Panel
The Phantom Freighter
The Secret of Skull Mountain
The Sign of the Crooked Arrow
The Secret of the Lost tunnel
The Wailing Siren Mystery
The Secret of Wildcat Swamp

The Crisscross Shadow
The Yellow Feather Mystery
The Hooded Hawk Mystery
The Clue in the Embers
The Secret of Piratesâ€™ Hill
The Ghost at Skeleton Rock
The Mystery at Devilâ€™s Paw
The Mystery of the Chinese Junk
Mystery of the Desert Giant
The Clue of the Screeching Owl
The Viking Symbol Mystery
The Mystery of the Aztec Warrior
The Haunted Fort
The Mystery of the Spiral Bridge
The Secret Agent on Flight 101
Mystery of the Whale Tattoo
The Arctic Patrol Mystery
The Bombay Boomerang
Danger of Vampire Trail
The Masked Monkey
The Shattered Helmet
The Clue of the Hissing Serpent
The Mysterious Caravan
The Witchmasterâ€™s Key
The Jungle Pyramid
The Firebird Rocket
The Sting of the Scorpion
Hardy Boys Detective Handbook
The Hardy Boys Back-to-Back
The Tower Treasure/The House
on the Cliff

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Celebrate 60 Years with the Worldâ€™s Greatest Super Sleuths!

âMaybe I can give you a tip where to find
your father,â said Pretzel Pete

PRINTED ON RECYCLED PAPER

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Copyright Â© 1987, 1959, 1955, 1927 by Simon & Schuster, Inc. All rights reserved. Published by Grosset & Dunlap, Inc., a member of The Putnam & Grosset Group, New York. Published simultaneously in Canada. .S.A.

THE HARDY BOYSÂ® is a registered trademark of Simon & Schuster, Inc.
GROSSET & DUNLAP is a trademark of Grosset & Dunlap, Inc.

eISBN : 978-1-440-67316-0

1998 Printing

http://us.penguingroup.com

CHAPTER I

Spying by Telescope

âSo YOU boys want to help me on another case?â Fenton Hardy, internationally known detective, smiled at his teen-age sons.

âDad, you said youâre working on a very mysterious case right now,â Frank spoke up. âIsnât there some angle of it that Joe and I could tackle?â

Mr. Hardy looked out the window of his second-floor study as if searching for the answer somewhere in the town of Bayport, where the Hardys lived. Finally he turned back and gazed steadfastly at his sons.

âAll right. How would you like to look for some smugglers?â

Joe Hardyâs eyes opened wide. âYou mean it, Dad?â

âNow just a minute.â The detective held up his hand. âI didnât say capture them; I just said look for them.â

âEven thatâs a big assignment. Thanks for giving it to us!â Frank replied.

The lean, athletic detective walked to a corner of the study where a long, narrow carrying case stood. Tapping it, he said:

âYou boys have learned how to manipulate this telescope pretty well. How would you like to take it out onto that high promontory above the ocean and train it seaward? The place I mean is two miles north of the end of the bay and eight miles from here.â

âThat would be great!â said seventeen-year-old, blond-haired Joe, his blue eyes flashing in anticipation.

Frank, who was a year older than his brother and less impetuous, asked in a serious tone of voice, âDad, have you any ideas about the identity of any of the smugglers?â

âYes, I do,â Mr. Hardy answered his tall, dark-haired son. âI strongly suspect that a man named Felix Snattman is operating in this territory. Iâll give you the whole story.â

The detective went on to say that he had been engaged by an international pharmaceutical company to trace stolen shipments of valuable drugs. Reports of thefts had come from various parts of the United States. Local police had worked on the case, but so far had failed to apprehend any suspects.

âHeadquarters of the firm is in India,â the detective told the boys. âIt was through them that I was finally called in. Iâm sure that the thefts are the result of smuggling, very cleverly done. Thatâs the reason I suspect Snattman. Heâs a noted criminal and has been mixed up in smuggling rackets before. He served a long term in prison, and after being released, dropped out of sight.â

âAnd you think heâs working around Bayport?â Joe asked. He whistled. âThat doesnât make this town a very healthy place to live in!â

âBut weâre going to make it solâ Mr. Hardy declared, a ring of severity in his voice.

âJust where is this spot weâre to use the telescope?â Frank asked eagerly.

âItâs on the Pollitt place. Youâll see the name at the entrance. An old man named Felix Pollitt lived there alone for many years. He was found dead in the house about a month ago, and the place has been vacant ever since.â

âIt sounds as if we could get a terrific range up and down the shore from there and many miles across the water,â Frank remarked.

Mr. Hardy glanced at his wrist watch. âItâs one-thirty now. You ought to be able to go out there, stay a fair amount of time, and still get home to supper.â

âOh, easily,â Joe answered. âOur motorcycles can really burn up the road!â

His father smiled, but cautioned, âThis telescope happens to be very valuable. The less jouncing it receives the better.â

âI get the point,â Joe conceded, then asked, âDad, do you want us to keep the information about the smugglers to ourselves, or would it be all right to take a couple of the fellows along?â

âOf course I donât want the news broadcast,â Mr. Hardy said, âbut I know I can trust your special friends. Call them up.â

âHow about Chet and Biff?â Joe consulted Frank. As his brother nodded, he said, âYou pack the telescope on your motorcycle. Iâll phone.â

Chet Morton was a stout, good-natured boy who loved to eat. Next to that, he enjoyed being with the Hardys and sharing their exciting adventures, although at times, when situations became dangerous, he wished he were somewhere else. Chet also loved to tinker with machinery and spent long hours on his jalopy which he called Queen. He was trying to âsoup upâ the motor, so that he could have a real âhot rod.â

In contrast to Chet, Biff Hooper was tall and lanky. To the amusementâand wonderâof the other boys, he used his legs almost as a spider does, covering tremendous distances on level ground or vaulting fences.

A few minutes later Joe joined his brother in the garage and told him that both Chet and Biff would go along. Chet, he said, had apologized for not being able to offer the Queen for the trip but her engine was âall over the garage.â âAs usual,â Frank said with a grin as the two boys climbed on their motorcycles and set out.

Presently the Hardys stopped at Biff Hooperâs home. He ran out the door to meet them and climbed aboard behind Joe. Chet lived on a farm at the outskirts of Bayport, about a fifteen-minute run from the Hooper home. The stout boy had strolled down the lane to the road and was waiting for his friends. He hoisted himself onto Frankâs motorcycle.

âIâve never seen a powerful telescope in operation,â he remarked. âHow far away can you see with this thing?â

âIt all depends on weather conditions,â Frank replied. âOn a clear day you can make out human figures at distances of twenty-four miles.â

âWow!â Chet exclaimed. âWe ought to be able to find those smugglers easily.â

âI wouldnât say so,â Biff spoke up. âSmugglers have the same kind of boats as everybody else. How close do you have to be to identify a person?â

âOh, about two and a half miles,â Joe answered.

The motorcycles chugged along the shore road, with Frank watching his speedometer carefully. âWe ought to be coming to the Pollitt place soon,â he said finally. âKeep your eyes open, fellows.â

The boys rode on in silence, but suddenly they all exclaimed together, âThere it is!â

At the entrance to a driveway thickly lined with trees and bushes was a stone pillar, into which the name âPollittâ had been chiseled. Frank and Joe turned into the driveway. The only part of the house they could see was the top of the roof. Finally, beyond a lawn overgrown with weeds, they came upon the tall, rambling building. It stood like a beacon high above the water. Pounding surf could be heard far below.

âThis place sure looks neglected,â Biff remarked.

Dank, tall grass grew beneath the towering trees. Weeds and bushes threatened to engulf the whole building.

âCreepy, if you ask me,â Chet spoke up. âI donât know why anybody would want to live here.â

The house itself was in need of repair. Built of wood, it had several sagging shutters and the paint was flaking badly.

âPoor old Mr. Pollitt was probably too sick to take care of things,â Frank commented, as he looked at several weed-choked flower beds.

To the Hardysâ disappointment, the sky had become overcast and they realized that visibility had been cut down considerably. Nevertheless, Frank unstrapped the carrying case and lugged it around to the front of the house.

He unfastened the locks and Joe helped his brother lift out the telescope and attached tripod, pulling up the eye-end section first.

Biff and Chet exclaimed in admiration.

âBoy, thatâs really neat!â Chet remarked.

He and Biff watched in fascination as Frank and Joe began to set up the telescope. First they unfastened the tape with which the tube and tripod legs were tied together. Joe turned the three legs down and pulled out the extensions to the desired height. Then Frank secured the tripod legs with a chain to keep them from spreading.

âWhatâs next?â Biff asked.

âTo get proper balance for the main telescope tube we slide it through this trunnion sleeve toward the eye end, like this.â After doing so, Frank tightened the wing nuts on the tripod lightly.

Joe picked up the balance weight from the carrying case and screwed it into the right side of the telescope tube about one third the distance from the eyepiece.

âThisâll keep the whole thing from being top heavy,â he pointed out.

âAnd whatâs this little telescope alongside the big one for?â Chet queried.

The House on the Cliff grin. He squinted through the ends of both the large and the small telescopes. âI canât see a thing,â he complained.

Joe laughed. âAnd you wonât until I insert one of the eyepieces into the adapter of the big telescope and put another eyepiece into the finder.â

of the eyepieces into the adapter of the big telescope and put another eyepiece into the finder.â

In a few minutes the Hardys had the fascinating device working. By turning a small knob, Frank slowly swung the telescope from left to right, and each boy took a turn looking out across the water.

âNot a boat in sight!â said Chet, disappointed.

Frank had just taken his second turn squinting through the eyepiece when he called out excitedly, âI see something!â

He now began a running account of the scene he had just picked up. âItâs not very clear ... but I see a boat ... must be at least six miles out.â

âWhat kind of boat?â Joe put in.

âLooks like a cruiser ... or a cutter.... Itâs not moving.... Want to take a look, Joe?â

Frankâs brother changed places with him. âSay, fellows, a manâs going over the side on a ladder ... and, hey! thereâs a smaller boat down below.... Heâs climbing into it.â

âCan you see a name or numbers on the big boat?â Frank asked excitedly.

âNo. The boatâs turned at a funny angle, so you canât see the lettering. You couldnât even if the weather was clearer.â

âWhich way is the man in the small boat heading?â Biff asked.

âHe seems to be going toward Barmet Bay.â

Joe gave up his position to Biff. âSuppose you keep your eye on him for a while, and also the big boat. Maybe itâll turn so you can catch the name or number on the box.â

Chet had been silent for several moments. Now he said, âDo you suppose theyâre the smugglers?â

âCould be,â Frank replied. âI think weâd better leave and report this to Dad from the first telephone weââ

He was interrupted by the sudden, terrifying scream of a man!

âWh-where did that come from?â Chet asked with a frightened look.

âSounded as if it came from inside,â Frank answered.

The boys stared at the house on the cliff. A moment later they heard a loud cry for help. It was followed by another scream.

âSomebodyâs in there and is in trouble!â Joe exclaimed. âWeâd better find out whatâs going on!â

Leaving the telescope, the four boys ran to the front door and tried the knob. The door was locked.

âLetâs scatter and see if we can find another door,â Frank suggested.

Frank and Joe took one side of the house, Biff and Chet the other. They met at the rear of the old home and together tried a door there. This, too, was locked.

âThereâs a broken window around the corner,â Biff announced. âShall we climb in?â

âI guess weâd better,â Frank answered.

As the boys reached the window, which seemed to open into a library, they heard the scream again.

âHelp! Hurry! Help!â came an agonized cry.

CHAPTER II

Thief at Work

JOE was first to slide through the broken window. âWait a moment, fellows,â he called out, âuntil I unlock this.â

Quickly he turned the catch, raised the window, and the other three boys stepped inside the library. No one was there and they ran into the large center hall.

âHello!â Frank shouted. âWhere are you?â

There was no answer. âMaybe that person who was calling for help has passed out or is unconscious,â Joe suggested. âLetâs look around.â

The boys dashed in various directions, and investigated the living room with its old-fashioned furnishings, the dining room with its heavily carved English oak set, the kitchen, and what had evidently been a maidâs bedroom in days gone by. Now it was heaped high with empty boxes and crates. There was no one in any of the rooms and the Hardys and their two friends met again in the hall.

âThe man must be upstairs,â Frank decided.

He started up the front stairway and the others followed. There were several bedrooms. Suddenly Chet hung back. He wanted to go with his pals but the eeriness of the house made him pause. Biff and the Hardys sped from one to another of the many rooms. Finally they investigated the last of them.

âNobody here! What do you make of it?â Biff asked, puzzled.

Chet, who had rejoined the group, said worriedly, âM-maybe the place is haunted!â

Joeâs eyes were searching for an entrance to the third floor. Seeing none, he opened three doors in the hall, hoping to find a stairway. He saw none.

âThere must be an attic in this house,â he said. âI wonder how you get to it.â

âMaybe thereâs an entrance from one of the bedrooms,â Frank suggested. âLetâs see.â

The boys separated to investigate. Suddenly Frank called out, âIâve found it.â

The others ran to where he had discovered a door behind a manâs shabby robe hanging inside a closet. This in turn revealed a stairway and the group hurriedly climbed it, Chet bringing up the rear.

The attic room was enormous. Old newspapers and magazines were strewn around among old-fashioned trunks and suitcases, but there was no human being in sight.

âI guess that cry for help didnât come from the house at all,â Biff suggested. âWhatâll we do now? Look outdoors?â

âI guess weâll have to,â Frank answered.

He started down the steep stairway. Reaching the foot, he turned the handle of the door which had swung shut. To his concern he was not able to open it.

âWhatâs the matter?â asked Chet from the top of the stairway.

âLooks as if weâre locked in,â Frank told him. âLocked in?â Chet wailed. âOh, no!â

Frank tried pulling and pushing the door. It did not budge.

âThatâs funny,â he said. âI didnât see any lock on the outside.â

Suddenly the full import of the situation dawned on the four boys. Someone had deliberately locked them in! The cries for help had been a hoax to lure them into the house!

âYou think somebody was playing a joke on us?â Biff asked.

âPretty rotten kind of joke,â Chet sputtered.

Frank and Joe were inclined to think that there was more to it than a joke. Someone had seen a chance to steal a valuable telescope and two late-model motorcycles!

âWeâve got to get out of here!â Joe said. âFrank, put your shoulder to the door and Iâll help.â

Fortunately, the door was not particularly sturdy and gave way easily. Frank glanced back a moment as he rushed through and saw two large hooks which he had not noticed before. They had evidently been slipped into the eyes and had been ripped from the framework by the crash on the door.

The other boys followed, running pell-mell through the hallway and clattering down the stairway. They dashed out the front door, leaving it open behind them. To their relief, the telescope still stood at the edge of the cliff, pointing seaward.

âThank goodness!â said Joe. âIâd hate to have had to tell Dad the telescope was gone!â

Frank rushed over to take a quick look through the instrument. It had occurred to him that maybe some confederate of the smugglers had seen them spying. He might even have tricked them into the house during the very time that a smuggling operation would be within range of the telescope!

When Frank reached the edge of the cliff and tried to look through the instrument, he gasped in dismay. The eyepieces from both the finder and the telescope tube had been removed!

As he turned to tell the other boys of his discovery, he found that they were not behind him. But a moment later Joe came running around the corner of the house calling out:

âThe motorcycles are safe! Nobody stole them!â

âThank goodness for that,â said Frank.

Chet and Biff joined them and all flopped down on the grass to discuss the mysterious happenings and work out a plan of action.

âIf that thief is hiding inside the house, Iâm going to find him,â Joe declared finally.

âIâm with you,â said Frank, jumping up. âHow about you, Biff, guarding the motorcycles and Chet taking charge of the telescope? That way, both the front and back doors will be covered, too, in case that thief comes out.â

âOkay,â the Hardysâ friends agreed.

As Frank and Joe entered the front hall, Joe remarked, âThereâs a back stairway. If we donât find the person on the first floor, Iâll take that to the second. You take the front.â

Frank nodded and the search began. Not only the first, but the second and attic floors were thoroughly investigated without results.

âThereâs only one place left,â said Frank. âThe cellar.â

This area also proved to have no one hiding in it. âI guess our thief got away,â Frank stated.

âAnd probably on foot,â Joe added. âI didnât hear any car, did you?â

âNo. Maybe he went down the cliff and made a getaway in a boat,â Frank suggested.

In complete disgust the Hardys reported their failure to Biff and Chet. Then they packed up the telescope and strapped it onto Frankâs motorcycle.

âWe may as well go home,â Joe said dolefully. âWeâll have a pretty slim report for Dad.â

âSlim?â said Biff. âI havenât had so much excitement in six months.â

The boys climbed aboard the motorcycles. As the Hardys were about to start the motors, all four of them froze in the seats. From somewhere below the cliff came a demoniacal laugh. Involuntarily the boys shuddered.

âL-letâs get out of here!â Chet urged.

Frank and Joe had hopped off the motorcycles, and were racing in the direction from which the eerie laughter was coming.

âIt may be another trap!â Chet yelled after them. âCome back!â

But the Hardys went on. Just before they reached the edge of the cliff they were thunderstruck to hear the laughter coming from a completely different area. It was actually in back of them!

âWhat gives?â Joe asked.

âSearch me,â his brother answered. âThe ghost must have a confederate.â

The brothers peered over the edge of the cliff but could see only jagged rocks that led to the booming surf below. Frank and Joe returned to their chums, disappointed that they had learned nothing and had no explanation for the second laugh.

âIâm glad it stopped, anyhow,â said Chet. âIt gave me goose pimples and made chills run up and down my spine.â

Biff looked at his wrist watch. âI really have to be getting home, fellows. Sorry to break up this man hunt. Maybe you can take me to a bus and come back.â

The Hardys would not hear of this and said they would leave at once.

They had gone scarcely a mile when the motor on Frankâs cycle sputtered and backfired, then died. âA swell time for a breakdown,â he said disgustedly as he honked for Joe to stop.

Joe turned around and drove back. âWhatâs the matter?â

âDonât know.â Frank dismounted. âItâs not the gas. I have plenty of that.â

âTough luck!â Joe said sympathetically. âWell, letâs take a look at the motor. Better get out your tools.â

As Frank opened the toolbox of his motorcycle, an expression of bewilderment came over his face.

âMy tools!â he exclaimed. âTheyâre gone!â

The others gathered around. The toolbox was indeed empty!

âAre you sure you had them when you left Bayport?â Chet asked.

âOf course I did. I never go anywhere without them.â

Biff shook his head. âI suppose the guy who took the eyepieces stole your tools too.â

Joe dashed to the toolbox on his own motorcycle and gave a cry of dismay.

âMine are gone, too!â

CHAPTER III

Landslide!

âTHATâS a shame, fellows,â Chet Morton said. âThis is sure your day for bad luck. First the eyepieces from your telescope are taken and now the tools from your motorcycles.â

âAnd all by the same person, Iâm sure,â Frank remarked grimly.

âSome slick operator, whoever he is,â Joe added gloomily.

Chet put his hands into his trouser pockets and with a grin pulled out a pair of pliers, a screw driver, and a wrench.

âI was working on the Queen this morning,â he explained. âGood thing I happened to put these in my pocket.â

âIâll say,â Frank declared gratefully, taking the tools which Chet handed over.

He unfastened the housing of the motor and began checking every inch of the machinery. Finally he looked up and announced, âI guess Iâve found the troubleâa loose connection.â

Frank adjusted the wires and a moment later the vehicleâs motor was roaring normally. The housing was put back on, Chetâs tools were returned with thanks, and the four boys set off once more.

âLetâs hope nothing more happens before we get home,â Biff said with a wry laugh.

âIâll second that,â Joe said emphatically.

For five minutes the cyclists rode along in silence, their thoughts partly on the passing scenery, but mostly on the mystery in which they had become involved.

Joeâs mind was racing with his throbbing motorcycle. In a few minutes he had far outdistanced his brother. Frank did not dare go any faster because of the telescope strapped onto his handle bars.

Presently Joe reached a spot in the road where it had been cut out of the hillside on the right. There was a sharp curve here. The motorcycle took it neatly, but he and Biff had scarcely reached the straightaway beyond when they heard a thunderous sound back of them.

âWhatâs that?â Joe cried out.

Biff turned to look over his shoulder. âA landslide!â he shouted.

Rocks and dirt, loosened by recent heavy rain-storms, were tumbling down the steep hillside at terrific speed.

âFrank!â Joe cried out in horror. He jammed on his brake and disengaged the engine. As he ran back to warn his brother, Joe saw that he was too late. Biff had rushed up and both could only stare helplessly, their hearts sinking.

Frank and Chet came around the corner at good speed and ran full tilt into the landslide. Its rumbling sound had been drowned out by the pounding surf and their own roaring motor.

The two boys, the motorcycle, and the telescope were bowled over by the falling rocks and earth. As the rain of debris finally stopped, Joe and Biff reached their sides.

âFrank! Chet!â they cried out in unison. âAre you hurt?â

Frank, then Chet, sat up slowly. Aside from looking a bit dazed, they seemed to be all right. âRock just missed my head,â Frank said finally.

âI got a mean wallop on my shoulder,â Chet panted gingerly, rubbing the sore spot.

âYou fellows were lucky,â Biff spoke up, and Joe nodded his intense relief.

âHow about the telescope?â Frank asked quickly. âTake a look at it, will you, Joe?â

The battered carrying case, pushed out of the straps which had held it in place on the motorcycle, lay in the road, covered with stone and dirt. Joe opened the heavily lined box and carefully examined the telescope.

âIt looks all right to me,â he said in a relieved voice. âOf course we wonât know for sure until we try other eyepieces in it. But at least nothing looks broken.â

By this time Frank and Chet were standing up and Biff remarked, âWhile you two are getting your breath, Joe and I can take the biggest rocks out of the way. Some motorist may come speeding along here and break his neck or wreck his car unless this place gets cleaned up.â

âOh, Iâm okay,â Chet insisted. âThe rock that hit me felt just like Bender, that big end on the Milton High team. Heâs hit me many a time the same way.â

Frank, too, declared that he felt no ill effects. Together, the boys flung rock after rock into the field between the road and the water and, in pairs, carried the heavier rocks out of the way.

âGuess weâre all set now,â Frank spoke up. âBiff, Iâm afraid youâre going to be late getting home.â He chuckled. âWho is she?â

Biff reddened a little. âHowâd you guess? I have a date tonight with Sally Sanderson. But sheâs a good sport. She wonât mind waiting a little longer.â

Again the four boys straddled the motorcycles and started off. A few minutes later a noise out in the ocean attracted Frankâs attention and he peered across the rolling sweep of waters. A powerful speedboat came into view around the base of a small cliff about a quarter mile out. It was followed at a short distance by a similar, but larger craft. Both boats were traveling at high speed.

âLooks like a race!â Joe called out. âLetâs watch it!â

The Hardys ran their motorcycles behind a clump of trees and stopped, then walked down to the shore line.

The boats did not appear to be having a friendly speed contest, however. The first boat was zigzagging in a peculiar manner, and the pursuing craft was rapidly overtaking it.

âSee! That second boat is trying to stop the other one!â Frank exclaimed.

âIt sure is. Wonder whatâs up,â said Joe tensely. âI wish that telescope was working. Can any of you fellows make out the names on the boats?â

âNo,â the others chorused.

The two men standing in the bow of the pursuing craft were waving their arms frantically. The first boat turned as if about to head toward the shore. Then, apparently, the helmsman changed his mind, for at once the nose of his boat was pointed out into the ocean again.

But the moment of hesitation had given the pursuers the chance they needed. Swiftly the gap between the racing craft grew smaller and smaller until the boats were running side by side. They were so close together that a collision seemed imminent.

âTheyâll all be killed if they arenât careful!â Frank muttered as he watched intently.

The lone man in the foremost craft was bent over the wheel. In the boat behind, one of the two men suddenly raised his right arm high. A moment later he hurled an object through the air. It landed in back of the engine housing in the center of the craft. At the same time the larger boat sped off seaward.

âWhat was that?â Chet asked. âIââ

Suddenly a sheet of flame leaped high into the air from the smaller boat. There was a stunning explosion and a dense cloud of smoke rose in the air. Bits of wreckage were thrown high and in the midst of it the boys saw the occupant hurled into the water.

Swiftly the whole boat caught fire. The flames raced from bow to stern.

âThat man!â shouted Frank. âHeâs alive!â

The boys could see him struggling in the surf, trying to swim ashore.

âHeâll never make it!â Joe gasped. âHeâs all in.â

âWeâve got to save him!â Frank cried out.

CHAPTER IV

The Rescue

THE Hardy boys knew that they had no time to lose. It was evident that the man in the water had been injured by the explosion and could not swim much longer.

âWeâll never reach him!â Chet said, as the four boys dashed across the rocks and grass to the shore.

Suddenly Frank cried out, âI see a rowboat up on the beach.â His sharp eyes had detected a large rowboat almost completely hidden in a small cove at the bottom of the cliff. âWeâd make better time in that!â

A huge rock jutting out of the water cut the cove off from the open part of the beach.

âWeâd have to go up to that ridge and then down,â Joe objected. âIâll swim out.â

âI will too,â said Biff.

The two plunged into the water and struck out for the stricken man.

Meanwhile, Frank and Chet sped up the slope, cut across a strip of grass, and began running down the embankment toward the rowboat.

âThat manâs still afloat,â Frank shouted as he looked out over the water.

Joe and Biff were making good time but were a long way from the man, who seemed now to be drifting with the outgoing tide. The explosion victim, fortunately, had managed to seize a piece of wreckage and was hanging onto it.

Slipping and scrambling, Frank and Chet made their way down the slope. Rocks rolled and tumbled ahead of them. But finally they reached the bottom safely and examined the boat. It was battered and old, but evidently still seaworthy. There were two sets of oars.

âGrab hold!â Frank directed Chet.

The boys pulled the boat across the pebbles and into the water. Swiftly they fixed the oars in the locks and took their places. Pulling hard, Frank and Chet rowed toward the distressed swimmer. Presently they overtook Joe and Biff, who clambered aboard. The man had seen the boys and called feebly to them to hurry.

âFaster!â Joe urged. âHe looks as if heâll go under any second!â

The motorboat in the background was still blazing fiercely, flames shooting high in the air. The craft was plainly doomed.

The boys pulled harder and the rowboat leaped across the water. When it was only a few yards away from the man, he suddenly let go his hold on the bit of wreckage and slipped beneath the waves.

âHeâs drowning!â Chet shouted, as he bent to his oar again.

Joe made a tremendously long, outward dive and disappeared into the water where the man had gone down. Frank and Chet rowed the boat to the spot and leaned over the side to peer down.

Just then, Joe and the stranger broke the surface of the water, with the boy holding an arm under the manâs shoulders. His head sagged.

âHeâs unconscious!â Biff whispered hoarsely, as he helped pull the victim into the boat. The man sprawled helplessly on the bottom, more dead than alive.

âWeâd better revive him and get him to the hospital,â said Frank.

He applied artificial respiration, forcing a little water from the manâs lungs, but the stranger did not regain consciousness.

âI think he collapsed from exhaustion,â Joe spoke up.

Frank and Chet took off their jackets and wrapped them around the wet figure.

âHow about taking him to that farmhouse over thereâalong the road?â Chet suggested.

The others agreed. As Frank and Chet rowed toward the farm, the boys discussed the mystery. Who was the victim of the explosion and why had the men in the other motorboat tried to kill him?

The man they had rescued lay face downward in the bottom of the boat. He was a slim, dark-haired man with sharp, clean-cut features, and his clothes were cheap and worn. Biff looked in his pockets for identification but found none.

âWonder if heâs a local man,â Joe said. âNever saw him around town.â

The other boys declared they never had either.

By this time the boat was close to shore. Joe and Biff leaped out and dragged it part way up on the beach. Then the four boys carried the unconscious man up the rocky shore toward the farmhouse.

At their approach a plump woman came hurrying out of the house. From the orchard nearby a burly man in overalls came forward.

âMy goodness! What has happened?â the woman asked, running toward them.

âWe just pulled this man out of the water,â Frank explained. âWe saw your houseââ

âBring him in,â boomed the farmer. âBring him right in.â

The woman ran ahead and held the door open. The boys carried the stranger into the house and laid him on a bed in the comfortably furnished first-floor bedroom. The farmerâs wife hastened to the kitchen to prepare a hot drink.

âRub his ankles and wrists, and get those wet clothes off him,â the farmer told the boys. âThat will step up his circulation. Iâll get him some pajamas.â

âHow about calling a doctor?â Frank asked.

âNo need. Heâll be okay,â the farmer declared.

The victim was soon under the covers. Frank and Joe continued to massage his wrists and ankles.

At last the stranger stirred feebly. His eyelids fluttered. His lips moved, but no words came. Then his eyes opened and the man stared at those around him, as though in a daze.

âWhere am I?â he muttered faintly.

âYouâre safe,â Frank assured him. âYouâre with friends.â

âYou saved me?â

âYes.â

âPretty nearâcashed inâdidnât I?â

âYou nearly drowned, but youâre all right now. When you feel like talking, you can tell us the whole story,â said Frank. âBut, in the meantime, weâll call the police or the Coast Guard and report those men who tried to murder you.â

The man in the bed blinked and looked out the window. Finally he said, âNo, no. Donât do that.â

The boys were shocked. âWhy not?â Joe burst out.

The man was thoughtfully silent for a moment, then said, âThanks, but Iâd rather let matters stand as they are. Iâll take care of it as soon as I get my strength back.â The rescued man turned to the farmer. âOkay with you if I stay here overnight? Iâll pay you, of course.â

The farmer put out his hand. âThe nameâs Kane and youâre welcome to stay until you feel strong. Nobody can say I ever turned a sick man away. And whatâs your name?â

The patient hesitated a moment. âJones. Bill Jones,â he said at last.

It was so evidently a false name that the Hardys glanced knowingly at each other. Mr. Kane did not seem to realize that his guest was apparently trying to hide his identity.

Mrs. Kane appeared with hot broth and toast. She suggested that her husband and the boys let the patient rest for a while. When she joined them in the living room she invited the boys to have a snack. Chet readily accepted for all of them.

The snack consisted of sandwiches of home-cured ham with cheese, glasses of fresh milk, and rich lemon pie, frothy with meringue. Chet beamed. âMrs. Kane, you ought to open a restaurant. Iâd be a steady customer. Youâre the best pie maker Iâve ever met.â

Frank, Joe, and Biff chuckled. How often they had heard their stout, food-loving chum make similar remarks! But in this case they had to agree with him and told Mrs. Kane so.

She smiled. âItâs the least I can do for you boys who just saved someoneâs life.â

Her young guests said nothing of their early afternoonâs adventure inside the Pollitt house, but Frank casually asked the Kanes if they had known the deceased owner and if anyone were living there now.

âSure I knew Felix Pollitt,â the farmer replied. âClosemouthed old codger, but I did hear him once say somethinâ about havinâ a no-good nephew. Pollitt said he was his only livinâ relative and he supposed heâd have to leave the property to him.â

âBut whoâd want the place?â Mrs. Kane spoke up. âItâs falling apart and would cost a mint of money to fix up.â

Joe grinned. âSounds like a haunted house,â he remarked pointedly.

âFunny you should say that.â Mrs. Kane looked at Joe. âThere was a family stopped here the other day. Wanted to buy some eggs. One of the little girls said theyâd had a terrible scare. Theyâd stopped at the old Pollitt place to have a picnic, and were scared out of their wits by moans and groans and queer laughs from the house.â

Mr. Kaneâs face broke into a grin. âThe kidâs imagination sure was runninâ away with itself.â

âIâm not so sure of that,â his wife disagreed. âI think some boys were in there playing pranks.â

After Frank and Joe and their friends had left the farmhouse, they discussed the strange noises at the Pollitt place from this new angle.

Biff frowned. âIf those ghosts are from Bayport High, theyâll sure have the laugh on us,â he remarked.

âThey sure will,â Chet agreed. âIâd hate to face them on Monday.â

Frank and Joe were not convinced. After they had dropped their chums at the Morton and Hooper homes, they discussed the dayâs strange and varied adventures all the way to the Hardy house.

âIâm sure that ghost business was meant to be something more than a prank,â Frank stated.

âRight,â his brother agreed. âI just had an idea, Frank. Maybe nobody was in the house, but he could have rigged up a tape recorder to make those sounds and a remote control to start it. What say we go back sometime and take a look?â

âIâm with you.â

By this time the boys had turned into the long driveway of the Hardy home, a spacious, three-story clapboard house on the corner of High and Elm streets. The large two-story garage at the rear of an attractive garden had once been a barn.

Frank and Joe parked their motorcycles, unstrapped the telescope, and carried it to the back porch. As they entered the kitchen, they found their mother, a pretty, sweet-faced woman, with sparkling blue eyes, preparing supper.

âHello, boys,â she greeted them. âDid you have a good day? See any smugglers?â

They kissed her and Frank said, âWe have a lot to tell you and Dad.â

âHeâs in the study upstairs. Iâll go up with you right away and we can talk while the chickenâs roasting and the potatoes baking.â

The three hurried up to the room where Mr. Hardy was busy looking in a large metal file in which he kept important records. The detective stopped his work and listened with rapt attention as Frank and Joe gave a detailed account of their adventures.

âWe sure fell for that cry for help,â Joe explained. âIâm sorry about the stolen eyepieces from the telescope.â

âAnd I hope it wasnât damaged when I had my spill,â Frank added. He smiled wanly. âYouâll probably want to dismiss us from your detective force.â

âNothing of the kind,â his father said. âBut now, letâs discuss what you saw through the telescope. You said you spotted a man who climbed down the ladder of a boat and went off in a smaller one. Could he have been this same fellow who calls himself Jones?â

âWe couldnât identify him,â Joe replied, âbut he might be.â

Frank snapped his fingers. âYes, and he could be one of the smugglers.â

âBut who threw that hand grenade at him?â Joe asked. âNot one of his own gang, surely. And those guys in the other speedboatâthey couldnât have been Coast Guard men, even in disguise. They wouldnât use grenades.â

âJoeâs right on the second point,â Mr. Hardy agreed. âBut Jones may still be a smuggler.â

âYou mean he might have done something to make his boss mad and the boss sent out a couple of men to get him?â Joe asked.

The detective nodded. âIf this theory is right, and we can persuade Jones to talk before he either rejoins the gang or starts trying to take revenge, then we might get him to turn stateâs evidence.â

The boys were excited. Both jumped from their chairs and Joe cried out eagerly, âLetâs go talk to him right away! By morning heâll be gone!â

CHAPTER V

Pretzel Pete

âJUST a minute!â Mrs. Hardy said to her sons. âHow about supper?â

âWe can eat when we come back from our interview with Jones,â Joe answered. âMother, he may decide to leave the farmhouse any time.â

Despairingly Mrs. Hardy returned to her husband. âWhat do you think, Fenton?â

The detective gave his wife an understanding smile, then turned to Frank and Joe. âDidnât you say Jones was in pretty bad shape?â

âYes, Dad,â Frank replied.

âThen I doubt very much that heâll try to leave the Kanesâ home before the time he setâtomorrow morning. Iâm sure that itâll be safe for us to eat Motherâs good supper and still see our man in time.â

Joe subsided, and to make his mother feel better, said with a smile, âGuess I let this mystery go to my brain for a minute. As a matter of fact, I have an empty space inside of me big enough to eat two suppers!â

Mrs. Hardy tweaked an ear of her energetic son, just as she had frequently done ever since he was a small boy. He smiled at her affectionately, then asked what he could do to help with supper.

âWell, suppose you fill the water glasses and get milk for you and Frank,â Mrs. Hardy said, as she and Joe went downstairs together.

At the table, as often happened at meals in the Hardy home, the conversation revolved around the mystery. Frank asked his father if he had made any progress on his part in the case concerning the smugglers.

âVery little,â the detective replied. âSnattman is a slippery individual. He covers his tracks well. I did find this out, though. The law firm which is handling old Mr. Pollittâs affairs has had no luck in locating the nephew to whom the property was left.â

âMr. Kane said heâd heard Mr. Pollitt call his nephew a no-good,â Frank put in.

âThatâs just the point,â Mr. Hardy said. âThe lawyers learned from the police that heâs a hoodlum and is wanted for burglary.â

Frank whistled. âThat puts the nephew in a bad spot, doesnât it? If he shows up to claim the property, heâll be nabbed as a criminal.â

âExactly,â Mr. Hardy answered.

âWhat will become of the property?â Joe queried.

His father said he thought the executors might let the house remain vacant or they might possibly rent it. âThey could do this on a month-to-month basis. This would give added income to the estate.â

âWhich wouldnât do the nephew much good if he were in jail,â Mrs. Hardy put in.

âThat would depend on how long his sentence was,â her husband said. âHe may not be a dangerous criminal. He may just have fallen into bad company and unwittingly become an accessory in some holdup or burglary.â

âIn that case,â Frank remarked, âhe may realize that he wouldnât have to stay in prison long. He may appear to claim the property, take his punishment, and then lead a normal, law-abiding life out at his uncleâs place.â

âWell, I sincerely hope so,â Mr. Hardy replied. âThe trouble is, so often when a young man joins a group of hoodlums or racketeers, heâs blackmailed for the rest of his life, even though he tries to go straight.â The detective smiled. âThe best way to avoid such a situation is never to get into it!â

At this moment the phone rang and Frank went to answer it. âItâs for you, Dad!â he called, coming back to the table.â

Mr. Hardy spent nearly fifteen minutes in conversation with the caller. In the meantime, the boys and Mrs. Hardy finished their supper. Then, while Mr. Hardy ate his dessert, he told his family a little about the information he had just received on the phone.

âMore drugs have disappeared,â he said tersely. âIâm positive now that Snattman is behind all this.â

âWere the drugs stolen around here?â Frank asked.

âWe donât know,â his father answered. âA pharmaceutical house in the Midwest was expecting a shipment of rare drugs from India. When the package arrived, only half the order was there. It was evident that someone had cleverly opened the package, removed part of the shipment, and replaced the wrapping so neatly that neither the customs officials nor the post office was aware that the package had been tampered with.â

âHow were the drugs sent to this country?â Joe queried.

âThey came by ship.â

âTo which port?â

âNew York. But the ship did stop at Bayport.â

âHow long ago was this?â

âNearly two months ago. It seems that the pharmaceutical house wasnât ready to use the drugs until now, so hadnât opened the package.â

âThen,â said Joe, âthe drugs could have been removed right on the premises, and have had nothing to do with smugglers.â

âYouâre right,â Mr. Hardy agreed. âEach time drugs are reported missing, thereâs a new angle to the case. Although Iâm convinced Snattman is back of it, how to prove this is really a stickler.â

Mr. Hardy went on to say that the tip he had received about Snattman being in the Bayport area had been a very reliable one. He smiled. âIâll tell you all a little secret. I have a very good friend down on the waterfront. He picks up many kinds of information for me. His name is Pretzel Pete.â

âPretzel Pete!â Frank and Joe cried out. âWhat a name!â

âThatâs his nickname along the waterfront,â Mr. Hardy told them. He laughed. âDuring the past few years Iâve munched on so many of the pretzels he sells, I think Iâm his best customer.â

By this time the boysâ father had finished his dessert, and he suggested they leave at once for the Kane farmhouse. He brought his black sedan from the garage and the boys hopped in. It did not take long to cover the six miles to the place where Jones was spending the night.

âWhy, the house is dark,â Frank remarked, puzzled.

âMaybe everyoneâs asleep,â Joe suggested.

âThis early?â Frank protested.

Mr. Hardy continued on down the lane. There was no sign of anyone around the place. Frank remarked that perhaps the farmer and his wife had gone out for the evening. âBut Iâm surprised that they would leave Jones alone in his condition,â he added.

âIâm quite sure they wouldnât,â his father averred. âIf theyâre asleep, Iâm afraid weâll have to wake them.â

He pulled up in front of the kitchen entrance. Frank was out of the car in an instant, the others followed. He rapped on the door. There was no answer.

âLetâs try the front door,â Joe suggested. âMaybe that has a knocker on it.â

The boys walked around to the ocean side of the house. Although they banged loudly with the brass door knocker, there was still no response.

âThe Kanes must have gone out,â said Joe.

âBut what about Jones? Surely heâs here.â

âAnd too weak to come to the door,â Frank surmised. âBut he could call out. I canât understand it.â

The brothers returned to the back door and reported to their father. Then, as Joe rapped several more times without response, a sinking feeling came over the brothers.

âI guess Jones recovered fast and has gone,â Joe said dejectedly. âWeâve goofed.â

âTry the knob. The door may not be locked,â Mr. Hardy ordered. From his tone the boys knew that he shared their fears.

Frank turned the knob and the door swung open. Mr. Hardy felt around for a light switch on the wall.

âWeâll go in,â he murmured. âIf Jones is here weâll talk to him.â

By this time the detective had found the switch. As the kitchen became flooded with light, the boys gasped, thunderstruck. On their previous visit they had been impressed by the neatness of the room. Now the place looked as though an earthquake had shaken it.

Pots and pans were scattered about the floor. The table was overturned. A chair lay upside down in a corner. Shattered bits of cups and saucers were strewn on the floor.

âWhat happened?â Frank exclaimed in bewilderment.

âThereâs been a fightâor a struggle of some kind,â said Mr. Hardy. âLetâs see what the rest of the house looks like.â

The boys opened the door to the adjoining living room. Frank snapped on the wall switch. There a horrifying sight met the Hardysâ eyes.

The farmer and his wife were bound and gagged

The farmer and his wife, bound and gagged, were tied to chairs in the middle of the room!

Swiftly Frank, Joe, and their father rushed over to Mr. and Mrs. Kane. They had been tied with strong ropes and so well gagged that the couple had been unable to utter a sound. In a minute the Hardys had loosened the bonds and removed the gags.

âThank goodness!â Mrs. Kane exclaimed with a sigh of relief, stretching her arms.

Her husband, spluttering with rage, rose from his chair and hurled the ropes to one side. âThose scoundrels!â he cried out.

Frank hastily introduced his father, then asked, âWhat happened?â

For several moments Mr. and Mrs. Kane were too upset to tell their story. But finally the farmer staggered over to the window and pointed down the shore road.

âThey went that way!â he roared. âFollow them!â

âWho?â

âThose thugs who tied us up! They took Jones!â

CHAPTER VI

The Strange Message

âHow long ago did those kidnapers leave?â Frank asked the Kanes quickly.

âAbout ten minutes,â replied the farmer. âMaybe you can catch them if you hurry!â

âCome on, Dad!â Frank cried. âLetâs go after them!â

Mr. Hardy needed no further urging. He and his sons ran out of the house and jumped into the car.

âThatâs rough stuff,â Joe said to his father as they turned onto the shore road, âbarging into a house, tying up the owners, and kidnaping a guy!â

âYes,â Mr. Hardy agreed. âIt looks as though your friend Jones is mixed up in some kind of racket. Those men must have been pretty desperate to risk breaking into an occupied house.â

The boysâ father was able to follow the tracks of the car from the tread marks in the dusty road. But soon there were signs that another car had turned onto the shore road from a side lane and the trail became confused.

The Hardys passed the lane that led into the Pollitt place and continued on until they came to a hilltop. Here they could get a clear view of the road winding along the coast for several miles. There was no sign of a car.

âWeâve lost them, I guess,â said Frank in disappointment, as Mr. Hardy brought the sedan to a stop.

âThey had too much of a head start,â Joe remarked. âIf only weâd gotten to the farm sooner. Well, we may as well go back.â

Mr. Hardy agreed, turned the car around, and once more the Hardys headed for the farm. On the way they discussed the mysterious kidnaping, and speculated on the identity of those responsible.

âIâll bet those men in the other motorboat saw us rescue Jones, or else they heard somehow that heâd been taken to the farmhouse,â Joe surmised.

âIf they are the kidnapers, I wonder what will happen to Jones now,â Frank said gravely. âThey tried to kill him once.â

âMaybe theyâll just hold him prisoner,â Mr. Hardy stated thoughtfully. âThey were probably afraid heâd tell all he knew, and couldnât afford to leave him at the farmhouse.â

When they got back to the Kanesâ, they found the farmer and his wife somewhat recovered from their harrowing experience. Mrs. Kane was busy straightening up the kitchen.

âWe couldnât catch them,â Frank reported sadly.

âWell, those hoodlums had a high-powered car and they werenât wastinâ any time. I could see âem from the window as they went down the lane,â the farmer remarked, frowning angrily at the recollection.

âPlease tell us exactly what happened, Mr. Kane,â Joe urged.

âWell, Mabel and I were here in the kitchen,â the man began. âMabel was washinâ the supper dishes when this fellow came to the door. He was a tall chap with a long, thin face.â

âHe asked us if we were looking after the man that was almost drowned earlier,â the farmerâs wife took up the tale. âWhen we said we were, the fellow told us that Mr. Jones was his brother and he had come to take him away.â

âI got suspicious,â Mr. Kane broke in. âHe didnât look nothinâ like Jones. I asked him where he lived.â

âAt that,â Mrs. Kane said, âhe walked in the house with another fellow right at his heels. They grabbed my husband. Henry put up an awful good fight but he was outnumbered. When I tried to help, a third man appeared from nowhere and held me back.â

âThey dragged us into the livinâ room, tied us to those chairs, and put the gags in our mouths,â the farmer continued. âThen we heard âem goinâ into Jonesâs room. Pretty soon they carried him out to a car where a fourth fellow was sittinâ at the wheel.â

âDid Jones put up a fight when they took him away?â Frank asked.

âHe tried to. He hollered for help, but of course I couldnât do anythinâ and he was too weak to struggle much.â

âThis whole affair is very peculiar,â Mr. Hardy observed. âPerhaps Jones is mixed up in the smuggling going on around here. But who were those four men, I wonder?â

Mrs. Kane shook her head. âAll I know is, weâre sure glad you and your sons came out tonight. Thereâs no telling how long weâd have been tied up before somebody found us!â

âWeâre glad, too, that we got here,â Frank replied.

âYou folks say your nameâs Hardy?â said the farmer. âAny relation to Fenton Hardy?â

âRight here.â The detective smiled.

âPleasure to know you!â exclaimed Kane heartily, putting out his hand. âIf anyone can get to the bottom of this business, you can.â

âIâll certainly try,â the boysâ father promised.

The Hardys bade the farmer and his wife good-by. They promised to call again at the Kane farm as soon as they had any further information, and Mr. Kane, in turn, said he would notify them if he found any trace of Jones or his kidnapers.

When they returned home the boys followed their father into his study.

âWhat do you make of all this, Dad?â Joe asked.

Mr. Hardy sat down at his desk. He closed his eyes and leaned back in his chair a few moments without speaking.

âI have only one theory,â he said at last. âThe kidnapers probably are Snattmanâs friends. That means you boys may have uncovered the fact that there is a whole gang of smugglers around here.â

The brothers were pleased with their progress. âWhat do we do next, Dad?â Joe asked eagerly.

âI want to evaluate this case from every angle,â their father replied. âIâll think about it and talk to you later.â With this the boys had to be content for the rest of the week end.

When the brothers came downstairs Monday morning, Mrs. Hardy was putting their breakfast on the table.

In answer to the boysâ inquiries, she replied, âYour father went out early this morning in his car. He didnât say when he would return. But your dad didnât take a bag with him, so heâll probably be back today.â Mrs. Hardy was accustomed to her husbandâs comings and goings at odd hours in connection with his profession and she had learned not to ask questions.

Frank and Joe were disappointed. They had looked forward to resuming a discussion of the case with their father.

âI guess weâre left on our own again to try finding out something about those smugglers,â Frank remarked, and Joe agreed.

Later, when they reached Bayport High School, the brothers saw Iola Morton standing on the front steps. With pretty, dark-haired Iola was her best friend Callie Shaw. Callie, a blond, vivacious, brown-eyed girl, was Frankâs favorite among all the girls in his class.

âHow are the ghost hunters this morning?â she asked with a mischievous smile. âIola told me about your adventures on Saturday.â

âChet was really scared,â Iola chimed in. âI think somebody played a good joke on all of you.â

âWell, whoever it was had better return the telescope eyepieces and our motorcycle tools,â Joe said defiantly.

But as the day wore on and none of their class-mates teased them or brought up the subject, the Hardys became convinced that the âghostâ had been serious and not just playing pranks.

âIt was no joke,â Joe said to Frank on the way home. âIf any of the fellows at school had done it, theyâd have been kidding us plenty by now.â

âRight,â Frank agreed. âJoe, do you think the smugglers had anything to do with what happened at the Pollitt place?â

âThatâs a thought!â exclaimed Joe. âThat house on the cliff would be a great hide-out. If the smugglers could make the house appear to be haunted, everyone would stay away.â

âI wish Dad would get home, so we could take up this idea with him,â Frank said thoughtfully.

But Mr. Hardy did not come home that day. He had often been away for varying lengths of time without sending word, but on this occasion, since he had not taken a bag, the boys felt uneasy.

âLetâs not worry Mother about this,â Frank said. âBut if Dadâs not back by Wednesdayâat the latestâI think we should do some inquiring. Maybe Pretzel Pete will be able to help us.â

Joe agreed. Wednesday was the start of their summer vacation and they could give full time to trying to locate their father.

On Tuesday afternoon the mystery of Mr. Hardyâs absence took a strange turn. Frank and Joe came home from school to find their mother seated in the living room, carefully examining a note that she evidently just had received.

âCome here, boys,â Mrs. Hardy said in an apprehensive tone. âLook at this and tell me what you think.â She handed the note to Frank.

âWhat is it?â he asked quickly. âWord from Dad?â

âItâs supposed to be.â

The boys read the note. It was typed on a torn sheet of paper and the signature looked like Fenton Hardyâs. It read:

I wonât be home for several days. Donât worry. Fenton.

That was all. There was nothing to indicate where the detective was; nothing to show when the note had been written.

âWhen did you get this, Mother?â asked Frank.

âIt came in the afternoon mail. It was addressed to me, and the envelope had a Bayport postmark.â

âWhy are you worried?â Joe asked. âAt least weâve heard from Dad.â

âBut Iâm not sure he sent the note.â

âWhat do you mean?â

âYour father and I have an agreement. Whenever he writes me, he puts a secret sign beneath his signature. Fenton was always afraid that someone would forge his name to a letter or note, and perhaps get papers or information that he shouldnât have.â

Frank picked up the note again. âThereâs no sign here. Just Dadâs signature.â

âIt may be his signature. If not, itâs a very good forgery.â Mrs. Hardy was plainly worried.

âIf Dad didnât write this note,â Joe asked, âwho did and why?â

âYour father has many enemies-criminals whom he has been instrumental in sending to prison. If there has been foul play, the note might have been sent to keep us from being suspicious and delay any search.â

âFoul play!â exclaimed Frank in alarm. âThen you think something has happened to Dad?â

CHAPTER VII

The Hidden Trail

JOE put an arm around his mother. âFrank and I will start a search for Dad first thing tomorrow,â her son said reassuringly.

Next morning, as the boys were dressing, Joe asked, âWhere shall we start, Frank?â

âDown at the waterfront. Letâs try to find Pretzel Pete and ask him if Dad talked to him on Monday. He may give us a lead.â

âGood idea.â

The brothers reached the Bayport waterfront early. It was the scene of great activity. A tanker was unloading barrels of oil, and longshoremen were trundling them to waiting trucks.

At another dock a passenger ship was tied up. Porters hurried about, carrying luggage and packages to a line of taxicabs.

Many sailors strolled along the busy street. Some stepped into restaurants, others into amusement galleries.

âI wonder where Pretzel Pete is,â Frank mused. He and Joe had walked four blocks without catching sight of the man.

âMaybe heâs not wearing his uniform,â Joe surmised. âYou know, the one Dad described.â

âLetâs turn and go back the other way beyond the tanker,â Frank suggested.

The boys reversed their direction and made their way through the milling throng for six more blocks.

Suddenly Joe chuckled. âHere comes our man.

Strolling toward them and hawking the product he had for sale came a comical-looking individual He wore a white cotton suit with a very loose-fitting coat Around his neck was a vivid red silk handkerchief, embroidered with anchors.

The vendorâs trousers had been narrowed at the cuff with bicycle clips to keep them from trailing on the ground, with the result that there was a continuous series of wrinkles from the edge of his coat to his ankles.

The man wore a white hat which came down to his ears. On the wide brown band the name Pretzel Pete was embroidered in white letters.

âBoy, thatâs some gear!â Frank murmured.

Pretzel Peteâs garb was bizarre, but he had an open, honest face. He stopped calling âPretzels! Hot pretzels! Best in the land!â and smiled at the Hardys. He set down the large metal food warmer he carried. From the top of it rose three short aerials, each ringed with a dozen pretzels.

âYou like them hot, or do you prefer them cold?â he asked the brothers.

Joe grinned. âIf theyâre good, I can eat them any way.â Then he whispered, âWeâre Mr. Fenton Hardyâs sons. Weâd like to talk to you.â

At that moment a group of sailors brushed past. Pretzel Pete did not reply until they were out of earshot, then he said to the boys, âCome into this warehouse.â

The brothers followed him down the street a short distance and through a doorway into an enormous room which at the moment was practically empty.

âYouâve brought a message from your pop?â the vendor asked.

Quickly Frank explained to him that their father seemed to be missing. âWe thought you might have heard this.â

âYes, I did,â Pretzel Pete answered. âBut I didnât think nothing about it. I always thought detectives disappearedâsometimes in order to fool people they were after.â

âThey sometimes do,â Joe told him. âBut this time seems to be different. Dad said he often came down here to get information from youâbecause you always give him good tipsâand we wondered if you had seen him lately.â

âYes.â

âWhen?â

âMonday morning.â

âDad has been gone ever since.â

âHmm.â The man frowned, picked up a pretzel from one of the aerials, and began to munch on it. âHelp yourselves, fellows.â

Frank and Joe each took one of the pretzels. They had just bitten into the delicious salted rings when Pete continued, âNow you got me worried. Your popâs a fine man and I wouldnât want to see anything happen to him. Iâll tell you a place you might look for him.â

Pretzel Pete said that he had picked up a bit of information that led him to think an East Indian sailor named Ali Singh might be engaged in some smuggling. The vendor did not know what ship he sailed on, but he understood that the man had come ashore for a secret meeting of some gang.

âThis here meeting,â Pretzel Pete explained, âwas being held out in the country somewhere off the shore road. It was to be in a deserted farm house on Hillcrest something or other. I donât remember whether it was âroadâ or âstreetâ or what.â

âWas this last Monday?â Frank asked eagerly.

âOh, no,â the vendor answered. âThis was about three weeks ago, but when I told your pop he seemed real interested and said he guessed heâd go out there and look around.â

Joe broke in, âDad must have thought the rest of the gang might be living there. Maybe theyâre holding him a prisoner!â

âOh, I hope not,â Pretzel Pete said worriedly. âBut you fellows had better get right out there and take a look.â

âWe certainly will,â Frank told the man.

The brothers thanked Pretzel Pete for the information, then hurried home. Mrs. Hardy was not there, so they did not have a chance to tell her about their plans.

âWeâll leave a note,â Frank decided and quickly wrote one.

Their hopes high, the brothers set off on their motorcycles on the search for their father. By now they were very familiar with the shore road but did not recall having seen any sign reading Hillcrest.

âSuppose itâs not marked,â said Joe. âWeâll never find it.â

Frank gripped his handle bars hard. âIf Dad found it, we wonât give up until we do.â

The motorcycles chugged past side road after side road. The farther away from Bayport the boys went, the farther apart these roads became. After a while they came to the Kanesâ farmhouse and were tempted to stop to see if they might know where Hillcrest was. But just then, a short distance ahead, Joe saw a small car suddenly turn into the shore road. It seemed to have come right out of a clump of bushes and trees.

âCome on, Frank! Letâs investigate that place.â

The boys pushed ahead, hoping to speak to the driver of the car. But he shot down the road in the opposite direction at terrific speed. When Frank and Joe reached the place from which he had just emerged, they saw that it was a road, though hardly noticeable to anyone passing by.

âIâll take a look and see where it goes,â Frank said, shutting off his motorcycle and walking up the grassy, rutted lane. Suddenly he called back, âWeâre in luck, Joe. I see a homemade sign on a tree. It says Hillcrest Road.â

Frank returned to his brother and the boys trundled their machines up among the trees to hide them. Then they set off afoot along the almost impassable woods road.

âThere arenât any tire tracks,â Joe remarked. âI guess that fellow who drove out of here must have left his car down at the entrance.â

Frank nodded, and then in a low tone suggested that they approach the deserted farmhouse very quietly, in case members of the gang were there. âIn fact, I think it might be better if we didnât stay on this road but went through the woods.â

Joe agreed and silently the Hardys picked their way along among the trees and through the undergrowth. Five minutes later they came to a clearing in which stood a ramshackle farmhouse. It looked as if it had been abandoned for many years.

The young sleuths stood motionless, observing the run-down building intently. There was not a sound of activity either inside or outside the place. After the boys had waited several minutes, Frank decided to find out whether or not anyone was around. Picking up a large stone, he heaved it with precision aim at the front door. It struck with a resounding thud and dropped to the floor of the sagging porch.

Frankâs action brought no response and finally he said to Joe, âI guess nobodyâs home. Letâs look in.â

âRight,â Joe agreed. âAnd if Dadâs a prisoner there, weâll rescue him!â

The boys walked across the clearing. There was no lock on the door, so they opened it and went inside. The place consisted of only four first-floor rooms. All were empty. A tiny cellar and a loft with a trap door reached by a ladder also proved to have no one in them.

âI donât know whether to be glad or sorry Dadâs not here,â said Frank. âIt could mean he escaped from the gang if he was caught by them and is safely in hiding, but canât send any word to us.â

âOr it could mean heâs still a captive somewhere else,â Joe said. âLetâs look around here for clues.â

The boys made a systematic search of the place. They found only one item which might prove to be helpful It was a torn piece of a turkish towel on which the word Polo appeared.

âThis could have come from some country club where they play polo,â Frank figured.

âOr some stable where polo ponies are kept,â Joe suggested.

Puzzled, Frank put the scrap in his pocket and the brothers walked down Hillcrest Road. They brought their motorcycles from behind the trees and climbed aboard.

âWhat do you think we should do next?â Joe asked.

âSee Police Chief Collig in Bayport,â Frank replied. âI think we should show him this towel Maybe he can identify it.â

Half an hour later they were seated in the chiefâs office. The tall, burly man took a great interest in the Hardy boys and often worked with Fenton Hardy on his cases. Now Chief Collig gazed at the scrap of toweling for a full minute, then slapped his desk.

âI have it!â he exclaimed. âThatâs a piece of towel from the Marco Polo!â

âWhatâs that?â

âA passenger ship that ties up here once in a while.â

Frank and Joe actually jumped in their chairs. Their thoughts went racing to Ali Singh, smugglers, a gang at the deserted farmhouse!

At that moment Chief Colligâs phone rang. The Hardys waited politely as he answered, hoping to discuss these new developments with him. But suddenly he put down the instrument, jumped up, and said:

âEmergency, fellows. Have to leave right away!â With that he rushed out of his office.

Frank and Joe arose and disappointedly left headquarters. Returning home, they reported everything to their mother, but upon seeing how forlorn she looked, Frank said hopefully, âThat note you received with Dadâs name on it could have been on the level.â

Mrs. Hardy shook her head. âFenton wouldnât forget the secret sign. I just know he wouldnât.â

Word quickly spread through Bayport that the famous Fenton Hardy had disappeared. Early the next morning a thick-set, broad-shouldered young man presented himself at the front door of the Hardy home and said he had something to tell them. Mrs. Hardy invited him to step inside and he stood in the hall, nervously twisting a cap in his hands. As Frank and Joe appeared, the man introduced himself as Sam Bates.

âIâm a truck driver,â he told them. âThe reason I came around to see you is because I heard you were lookinâ for Mr. Hardy. I might be able to help you.â

CHAPTER VIII

A Cap on a Peg

âYOUâVE seen my father?â Frank asked the truck driver.

âWell, I did see him on Monday,â Sam said slowly, âbut I donât know where he is now.â

âCome in and sit down,â Frank urged. âTell us everything you know.â

The four walked to the living room and Mr. Bates sat down uneasily in a large chair.

âWhere did you see Mr. Hardy?â Mrs. Hardy asked eagerly.

But Sam Bates was not to be hurried. âIâm a truck driver, see?â he said. âMostly I drive in Bayport but sometimes I have a run to another town. Thatâs how I come to be out there that morninâ.â

âOut where?â

âAlong the shore road. Iâm sure it was Monday, because when I came home for supper my wife had been doinâ the washinâ and she only does that on Monday.â

âThat was the day Dad left!â Joe exclaimed.

âWell, please go on with the story,â Frank prodded Sam Bates. âWhere did you see him?â

The truck driver explained that his employer had sent him to a town down the coast to deliver some furniture. âI was about half a mile from the old Pollitt place when I saw a man walkinâ along the road. I waved to him, like I always do to people in the country, and then I see itâs Mr. Hardy.â

âYou know my father?â Frank asked.

âOnly from his pictures. But Iâm sure it was him.â

âDad left here in a sedan,â Joe spoke up. âDid you see one around?â

âNo, I didnât.â

âWhat was this man wearing?â Mrs. Hardy asked.

âWell, letâs see. Dark-brown trousers and a brown-and-black plaid sport jacket. He wasnât wearinâ a hat, but I think he had a brown cap in one hand.â

Mrs. Hardyâs face went white. âYes, that was my husband.â After a moment she added, âCan you tell us anything more?â

âIâm afraid not, maâam,â the trucker said. âYou see, I was in kind of a hurry that morninâ, so I didnât notice nothinâ else.â He arose to leave.

âWe certainly thank you for coming to tell us, Mr. Bates,â Mrs. Hardy said.

âYes, youâve given us a valuable lead,â Frank added. âNow weâll know where to look for Dad.â

âI sure hope he shows up,â the driver said, walking toward the door. âLet me know if I can help any.â

When the man had left, Joe turned to Frank, puzzled. âDo you suppose Dad hid his car and was walking to the Pollitt house? If so, why?â

âMaybe he picked up a clue at that deserted farmhouse on Hillcrest Road,â Frank suggested, âand it led to the old Pollitt place. If he left his car somewhere, he must have been planning to investigate the haunted house without being seen.â

âSomething must have happened to him!â Joe cried out. âFrank, Iâll bet he went to Pollittâs and that fake ghost got him. Letâs go look for Dad right away!â

But Mrs. Hardy broke in. Her expression was firm. âI donât want you boys to go to that house alone. Maybe youâd just better notify the police and let them make a search.â

The brothers looked at each other. Finally Frank, realizing how alarmed she was, said, âMother, itâs possible Dad is there spying on some activities offshore and heâs all right but canât leave to phone you. The Pollitt line must have been disconnected. If Joe and I go out there and find him we can bring back a report.â

Mrs. Hardy gave a wan smile. âYouâre very convincing, Frank, when you put it that way. All right. Iâll give my permission, but you mustnât go alone.â

âWhy not, Mother? We can look out for ourselves,â Joe insisted.

âGet some of the boys to go with you. Thereâs safety in numbers,â his mother said.

The boys agreed to this plan and got busy on the telephone rounding up their pals. Chet Morton and Biff Hooper agreed to go, and they suggested asking Tony Prito and Phil Cohen, two more of the Hardysâ friends at Bayport High. Phil owned a motorcycle. He and Tony said they could go along.

Shortly after lunch the group set out. Chet rode with Frank, Biff with Joe, and Tony with Phil The three motorcycles went out of Bayport, past the Tower Mansion, and along the shore road.

They passed the Kane farmhouse, Hillcrest Road, and at last came in sight of the steep cliff rising from Barmet Bay and crowned by the rambling frame house where Felix Pollitt had lived. All this time they had watched carefully for a sign of Mr. Hardyâs car, but found none.

âYour dad hid it well,â Chet remarked.

âItâs possible someone stole it,â Frank told him.

As the boys came closer to the Pollitt property, Phil said to Tony, âLonely looking place, isnât it?â

âSure is. Good haunt for a ghost.â

When they were still some distance from the lane, Frank, in the lead, brought his motorcycle to a stop and signaled the other two drivers to do likewise.

âWhatâs the matter?â Chet asked.

âWeâd better sneak up on the place quietly. If we go any farther and the ghost is there, heâll hear the motorcycles. I vote we leave them here under the trees and go the rest of the way on foot.â

The boys hid their machines in a clump of bushes beside the road, and then the six searchers went on toward the lane.

âWeâll separate here,â Frank decided. âThree of us take one side of the lane and the rest the other side. Keep to the bushes as much as possible, and when we get near the house, lay low for a while and watch the place. When I whistle, you can come out of the bushes and go up to the house.â

âThatâs a good idea,â Joe agreed. âBiff, Tony, and I will take the left side of the road.â

âOkay.â

The boys entered the weeds and undergrowth on either side of the lane. In a few minutes they were lost to view and only an occasional snapping and crackling of branches indicated their presence. The six sleuths crept forward, keeping well in from the lane. After about ten minutes Frank raised his hand as a warning to Chet and Phil. He had caught a glimpse of the house through the dense thicket.

They went on cautiously until they reached the edge of the bushes. From behind the screen of leaves they looked toward the old building. An expression of surprise crossed Frankâs face.

âSomeoneâs living here!â he exclaimed in astonishment.

From where the boys stood they hardly recognized the old place. Weeds that had filled the flower beds on their last visit had been completely cleared away. Leaves and twigs had been raked up and the grass cut.

A similar change had been wrought in the house. The hanging shutters had been put in place and the broken library window glass replaced.

âWhat do you suppose has happened?â Chet whispered.

Frank was puzzled. âLetâs wait a minute before we go any farther.â

The boys remained at the edge of the bushes, watching the place. A short time later a woman came out of the house carrying a basket of clothes. She walked over to a clothesline stretched between two trees and began to hang up the laundry. Shortly afterward a man came out, and strode across the yard to a shed where he started filling a basket with logs.

The boys looked at one another in bewilderment. They had expected to find the same sinister and deserted place they had visited previously. Instead, here was a scene of domestic tranquillity.

âThereâs not much use in our hiding any longer,â Frank whispered. âLetâs go out and question these people.â He gave the prearranged whistle.

The other three boys appeared, and the entire group walked boldly up the lane and across the yard. The man in the woodshed saw them first and straightened up, staring at them with an expression of annoyance. The woman at the clothesline heard their footsteps and turned to face them, her hands on her hips. Her gaunt face wore an unpleasant scowl.

âWhat do you want?â demanded the man, emerging from the shed.

He was short and thin with close-cropped hair, and he needed a shave. His complexion was swarthy, his eyes narrow under coarse, black brows.

At the same time another man came out of the kitchen and stood on the steps. He was stout and red-haired with a scraggly mustache.

âYeah, who are you?â he asked.

âWe didnât know anyone was living here,â Frank explained, edging over to the kitchen door. He wanted to get a look inside the house if possible.

âWell, weâre livinâ here now,â said the red-haired man, âand we donât like snoopers.â

âWeâre not snooping,â Frank declared. âWe are looking for a man who has disappeared from Bayport.â

âHumph!â grunted the woman.

âWhy do you think heâs around here?â the thin man put in.

âHe was last seen in this neighborhood.â

âWhat does he look like?â

âTall and dark. He was wearing a brown suit and sports jacket and cap.â

âThere hasnât been anybody around here since we rented this place and moved in,â the red-haired man said gruffly.

There seemed to be no prospect of gaining information from the unpleasant trio, so the boys started to leave. But Frank had reached the kitchen door. As he glanced in he gave a start. Hanging on a peg was a brown sports cap!

It looked exactly like the one his father owned, and which he had worn the morning that he had disappeared.

CHAPTER IX

Plan of Attack

âIâM very thirsty,â Frank said quickly to the occupants of the Pollitt house. âMay I have a drink?â

The red-haired man and the woman looked at each other. They obviously wished to get rid of their visitors as soon as possible. But they could not refuse such a reasonable request.

âCome into the kitchen,â said the man grudgingly.

Frank followed him through the door. As he passed the cap he took a good look at it. It was his fatherâs, and there were stains on it which looked like blood!

The redheaded man pointed to a sink on the other side of the room. On it stood a plastic cup. âHelp yourself,â he said gruffly.

Frank went across the room and ran some water from the faucet. As he raised the cup to his lips, his mind was racing. On his way out he glanced again at the peg.

The cap was gone!

Frank gave no sign that he had noticed anything amiss. He walked out into the yard and joined the other five boys.

âI guess we may as well be going,â he said nonchalantly.

âYou might as well,â snapped the woman. âThereâs no stranger around here, I tell you.â

The boys started off down the lane. When they were out of sight of the house, Frank stopped and turned to his companions.

âDo you know what I saw in that kitchen?â he asked tensely.

âWhat?â

âDadâs cap hanging on a peg!â

âThen he has been there!â cried Joe. âThey were lying!â

âYes,â Frank continued, âandâand there were bloodstains on the cap!â

âBloodstains!â Joe exclaimed. âThat means he must be in trouble. Frank, weâve got to go back!â

âWe sure do!â his brother agreed. âBut I wanted to tell you all about it first.â

âWhat do you think we should do?â Chet asked.

âIâll ask those people in the house about the cap and force a showdown,â Frank declared tersely. âWeâve got to find out where Dad is!â

Resolutely the boys started back to the Pollitt house. When they reached the yard they found the two men and the woman standing by the shed talking earnestly. The woman caught sight of them and spoke warningly to the red-haired man.

âWhat do you want now?â he demanded, advancing toward the boys.

âWe want to know about that sports cap in the kitchen,â said Frank firmly.

âWhat cap? Thereâs no cap in there.â

âThere isnât nowâbut there was. It was hanging on a peg when I went in for a drink.â

âI donât know anythinâ about no cap,â persisted the man.

âPerhaps weâd better ask the police to look around,â Joe suggested.

The redhead glanced meaningly at the woman. The other man stepped forward. âI know the cap this boy means,â he said. âItâs mine. What about it?â

âIt isnât yours and you know it,â Frank declared. âThat cap belongs to the man weâre looking for.â

âI tell you it is my cap!â snapped the swarthy man, showing his yellowed teeth in a snarl âDonât tell me Iâm lyinâ.â

The red-haired man intervened. âYouâre mistaken, Klein,â he said. âI know the cap they mean now. Itâs the one I found on the road a few days ago.â

âGuess youâre right, Red,â Klein conceded hastily.

âYou found it?â asked Frank incredulously.

âSure, I found it. A brown cap with bloodstains on it.â

âThatâs the one. But why did you hide it when I went into the kitchen?â

âWell, to tell the truth, them bloodstains made me nervous. I didnât know but what there might be some trouble come of it, so I thought Iâd better keep that cap out of sight.â

âWhere did you find it?â Joe asked.

âAbout a mile from here.â

âOn the shore road?â

âYes. It was lyinâ right in the middle of the road.â

âWhen was this?â

âA couple of days agoâjust after we moved in here.â

âLetâs see the cap,â Chet Morton suggested. âWe want to make sure of this.â

As Red moved reluctantly toward the kitchen, the woman sniffed. âI donât see why youâre makinâ all this fuss about an old cap,â she said. âCominâ around here disturbinâ honest folks.â

âWeâre sorry if weâre bothering you,â said Joe, âbut this is a very serious matter.â

Red came out of the house holding the cap. He tossed it to Frank.

The boy turned back the inside flap and there he found what he was looking forâthe initials F. H. printed in gold on the leather band.

âItâs Dadâs cap all right.â

âI donât like the look of those bloodstains,â said Joe in a low voice. âHe must have been badly hurt.â

âAre you sure you found this on the road?â Frank asked, still suspicious.

âYou donât think Iâd lie about it, do you?â Red answered belligerently.

âI canât contradict you, but Iâm going to turn this over to the police,â Frank told him. âIf you know anything more about it, youâd better speak up now.â

âHe doesnât know anything about it,â shrilled the woman angrily. âGo away and donât bother us. Didnât he tell you he found the cap on the road? I told him to burn up the dirty thing. But he wanted to have it cleaned and wear it.â

The boys turned away, Frank still holding the cap. âCome on, fellows,â he said. âLetâs get out of here.â

As the boys started down the lane they cast a last glance back at the yard. The woman and the two men were standing just where the young sleuths had left them. The woman was motionless, her hands on her hips. Red was standing with his arms folded, and Klein, the swarthy man, was leaning against a tree. All three were gazing intently and silently after the departing boys.

âHe doesnât know anything about the cap,â the woman shrilled

âIâm sure that those people know more about Dadâs cap than theyâre telling,â Frank said grimly, as the boys mounted their motorcycles and rode back toward Bayport.

âWhat are you planning to do next?â Phil asked as he pulled his machine alongside Frankâs.

âIâm going right to Chief Collig and tell him the whole story.â

âOkay, weâre with you!â

The boys rode directly to police headquarters and left their motorcycles in the parking lot. Chief Collig looked up as his six visitors were ushered into his office.

âWell,â he said heartily, âthis is quite a delegation! What can I do for you?â

As Frank and Joe took turns, with an occasional graphic illustration from one of the other boys, they told the full story and showed him the bloodstained cap.

Chief Collig looked grave. âI donât like the sound of this at all,â he said finally. âWe must find your father at once! This cap is a good clue.â Then he went on, âOf course you realize that the area where the Pollitt house is located is outside the limits of Bayport, so my men canât go there. But Iâll get in touch with Captain Ryder of the State Police at once, so he can assign men to the case.â

The boys thanked the chief for his help and left. Chet, Tony, Biff, and Phil went their separate ways while Frank and Joe turned toward home. They decided not to upset their mother about the bloodstained cap, but merely tell her that the State Police would take over the search for her husband.

âI still think thereâs some connection between Dadâs disappearance and the smuggling outfit and the house on the cliff,â Frank declared.

âWhat Iâve been wondering,â said Joe, âis where those two motorboats came from that day Jones was attacked. We didnât see them out in the ocean earlierâat least not both of them.â

âThatâs right. They could have come right out from under the cliff.â

âYou mean, Frank, there might be a secret harbor in there?â

âMight be. Hereâs the way it could work. Dad suspects smugglers are operating in this territory from a base that he has been unable to find.â Frank spread his arms. âThe base is the old Pollitt place! What more do you want?â

âBut the house is on top of a cliff.â

âThere could be a secret passage from the house to a hidden harbor at the foot of the cliff.â

âGood night, Frank, it sure sounds reasonable!â

âAnd perhaps that explains why the kidnapers got away with Jones so quickly on Saturday. If they left the Kane farmhouse just a little while before we did, we should have been able to get within sight of their car. But we didnât.â

âYou mean they turned in at the Pollitt place?â

âWhy not? Probably Jones is hidden there right now.â

âAnd maybe Dad too,â Joe cried out excitedly.

âThatâs right. Iâm against just sitting and waiting for the state troopers to find him. How about asking Tony if he will lend us his motorboat, so we can investigate the foot of that cliff?â

âI get you!â Joe agreed enthusiastically. âAnd if we pick up any information we can turn it over to the State Police and they can raid the Pollitt place!â

CHAPTER X

A Watery tunnel

WHEN the brothers arrived home Frank and Joe assured their mother that the State Police would soon find Mr. Hardy. Some of the anxiety left her face as she listened to her sonsâ reassuring words.

When she went to the kitchen to start preparations for supper, the boys went to phone Tony Prito. After Frank explained their plan to him, he agreed at once to let them use the Napoli, provided they took him along.

âI wouldnât miss it for anything,â he said. âBut I canât go until afternoon. Have to do some work for my dad in the morning. Iâll meet you at the boathouse at two oâclock.â

âSwell, Tony. I have a job of my own in the morning.â

Chet called a few minutes later. As Frank finished telling him about the plan, he whistled. âYou fellows have got your nerve all right. But count me in, will you? I started this thing with you and Iâd like to finish it. Weâve got to find your father!â

After Chet had said good-by, Joe asked his brother, âWhatâs on for the morning?â

âI want to go down to the waterfront and talk to Pretzel Pete again. He might have another clue, Also, I want to find out when the Marco Polo is due back here.â

Joe nodded. âI get it. You think something may be going on then?â

âRight. And if we can find Dad and lead the Coast Guard to the smugglers before the boat docksââ

âBrother, thatâs a big order.â

By nine oâclock the following morning Frank and Joe were down at the Bayport docks. Pretzel Pete was not in evidence.

âWeâd better be cagey about asking when the Marco Poloâs coming in,â Frank cautioned. âThe smugglers probably have spies around here and weâd sure be targets.â

Acting as if there were no problems on their minds, Frank and Joe strolled along whistling. Once they joined a group of people who were watching a sidewalk merchant. The man was demonstrating little jumping animals. Frank and Joe laughed as they bought a monkey and a kangaroo. âIola and Callie will get a kick out of these,â Joe predicted.

âSay, Frank, here comes Pretzel Pete now!â Joe whispered.

The Hardys went up the street, saying in a loud voice in case anyone was listening, that they were hungry and glad to see Pete.

âNobody can make pretzels like yours,â Joe exclaimed. âGive me a dozen. Two for my mouth and ten for my pockets.â

As Pretzel Pete laughed and pulled out a cellophane bag to fill the order, Frank said in a whisper, âHeard anything new?â

âNot a thing, son.â Pete could talk without moving his lips. âBut I may know something tomorrow.â

âHow come?"

âThe Marco Poloâs docking real earlyâfive A.M. I heard Ali Singh is one of the crew. Iâll try to get a line on him.â

âGreat! Weâll be seeing you.â

The boys moved off, and to avoid arousing any suspicion as to why they were in the area, headed for a famous fish market.

âMother will be surprised to see our morningâs catch,â Joe said with a grin as he picked out a large bluefish.

The brothers did not discuss the exciting information Pretzel Pete had given them until they were in the safety of their own home. Then Joe burst out, âFrank, if the Marco Polo gets offshore during the night, itâll have to lay outside until itâs time to dock!â

âAnd thatâll give those smugglers a real break in picking up the stolen drugs!â Frank added. âMaybe we should pass along our suspicions to the Coast Guard.â

âNot yet,â Joe objected. âAll we have to go on is Pretzel Peteâs statements about Ali Singh. Maybe weâll learn more this afternoon and then we can report it.â

âI guess youâre right,â Frank concluded. âIf those smugglers are holding Dad, and find out that weâve tipped off the Coast Guard, theyâll certainly harm him.â

âYou have a point.â

When Frank and Joe reached the Prito boathouse at two oâclock, Tony and Chet were already there. Tony was tuning up the motor, which purred evenly.

âNo word from your dad yet?â Tony asked. The Hardys shook their heads as they stepped aboard.

The Napoli was a rangy, powerful craft with graceful lines and was the pride of Tonyâs life. The boat moved slowly out into the waters of Barmet Bay and then gathered speed as it headed toward the ocean.

âRough water,â Frank remarked as breaking swells hit the hull. Salt spray dashed over the bow of the Napoli as it plunged on through the white-caps. Bayport soon became a speck nestled at the curve of the horseshoe-shaped body of water. Reaching the ocean, Tony turned north. The boys could see the white line of the shore road rising and falling along the coast. Soon they passed the Kane farm. Two miles farther on they came within sight of the cliff upon which the Pollitt house stood. It looked stark and forbidding above the rocks, its roof and chimneys silhouetted against the sky.

âPretty steep cliff,â Tony observed. âI canât see how anyone could make his way up and down that slope to get to the house.â

âThatâs probably why nobody has suspected the place of being a smuggling base,â Frank replied. âBut perhaps when we look around weâll find an answer.â

Tony steered the boat closer toward the shore, so that it would not be visible from the Pollitt grounds. Then he slackened speed in order that the sound of the engine would be less noticeable, and the craft made its way toward the bottom of the cliff.

There were currents here that demanded skillful navigation, but Tony brought the Napoli through them easily, and at last the boat was chugging along close to the face of the cliff.

The boys eagerly scanned the formidable wall of rock. It was scarred and seamed and the base had been eaten away by the incessant battering of waves. There was no indication of a path.

Suddenly Tony turned the wheel sharply. The Napoli swerved swiftly to one side. He gave it power and the craft leaped forward with a roar.

âWhatâs the matter?â Frank asked in alarm.

Tony gazed straight ahead, tense and alert. Another shift of the wheel and the Napoli swerved again.

Then Chet and the Hardys saw the danger. There were rocks at the base of the cliff. One of them, black and sharp, like an ugly tooth, jutted out of the water almost at the boatâs side. Only Tonyâs quick eye had saved the Napoli from hitting it!

They had blundered into a veritable maze of reefs which extended for several yards ahead. Tonyâs passengers held their breaths. It seemed impossible that they could run the gantlet of those rocks without tearing out the bottom of the craft.

But luck was with them. The Napoli dodged the last dangerous rock, and shot forward into open water.

Tony sank back with a sigh of relief. âWhew, that was close!â he exclaimed. âI didnât see those rocks until we were right on top of them. If weâd ever struck one of them weâd have been goners.â

Frank, Joe, and Chet nodded in solemn agreement. Then, suddenly, Frank cried out, âTurn back! I think I saw an opening!â

Tony swung the boat around. The opening which Frank had spotted was a long, narrow tunnel. It led right through the cliff!

âThis might be the secret entrance!â Joe exclaimed.

âI think itâs large enough for the boat to go through,â said Tony. âWant me to try it?â

Frank nodded tensely. âGo ahead.â

The Napoli slipped through the opening and in a few moments came out into a pond of considerable extent. The boys looked about expectantly. Steep slopes covered with scraggly trees and bushes reached to the waterâs edge. But there was no path or indication that any human being ever came down to the pond.

Suddenly Frank gave a gasp of surprise and said, âLook to my right, fellows.â

Among the thickets at the base of the steepest slope stood a man. He was very tall, his face was weather-beaten, and his lips thin and cruel. He stood quietly, looking at the boys without a shadow of expression on his sinister face.

Upon realizing he had been observed, the man shouted, âGet out of here!â

Tony throttled the engine and Frank called, âWe arenât doing any harm.â

âI said âGet out!â This is private property.â

The boys hesitated. Instantly the man, as though to back up his commands, reached significantly toward the holster of a revolver.

âTurn that boat around and beat it!â he mapped. âAnd donât ever come back here! Not if you know whatâs good for you.â

The boys realized that nothing would be gained by argument. Tony slowly brought the boat around.

âOkay,â Joe called cheerfully.

The stranger did not reply. He stood gazing fixedly after them, his left hand pointing to the exit, his right tapping the gun holster, as the motorboat made its way out through the tunnel

âLooks as if he didnât want us around,â remarked Tony facetiously, as soon as the Napoli was in open water again.

âHe sure didnât!â Frank exclaimed. âI expected him to start popping that gun at any moment!â

âHe must have an important reason. Who and what do you suppose he is?â Tony asked in bewilderment.

âFellows,â Frank said thoughtfully, âI think that man might have been Snattman!â

CHAPTER XI

Cliff Watchers

âFRANK!â Joe exclaimed. âI think youâve hit it! That man had no reason to act the way he did unless heâs covering up something.â

âSomething like smuggling, you mean,â said Chet. âHe must be Snattman or one of his gang.â

âAnd,â Frank went on, âthe fact that he was in that cove must mean he has some connection with the house on the cliff.â

âSnattman, king of the smugglers!â Tony whistled. âYou guys really get in some interesting situations!â

âIâll bet that heâs one of the fellows who chased Jones that day in the motorboat,â Joe cried.

âAnd tried to kill him,â Frank continued the thought.

âLetâs get away from here!â Chet urged.

âWhy should we go now?â Frank demanded. âWeâve stumbled on something important. That hidden pond may be the smugglersâ base.â

âBut if they use the house how do they get to it?â Tony asked. âThose cliffs up from the pond were mighty steep.â

âThere must be some other way that we couldnât see,â Joe said. âWhat say we hang around here for a while and find out what we can?â

Tony caught the Hardysâ enthusiasm and agreed to keep the motorboat in the vicinity of the Cliff.

âThat fellow may be keeping his eye on us and we donât want him to know that weâre watching the place,â Frank observed. âLetâs run back to the bay and cruise up and down a while, then return.â

Chet sighed. âIâm glad none of you argued with that armed man.â

âRight,â Joe replied. âAs it is, he must think we were simply out for a cruise and wandered into that tunnel by mistake.â

âYes,â his brother agreed. âIf heâd known weâre hunting for Dad, he might have acted very differently.â

In the late afternoon Tony took the Napoli back to the suspected shore spot. Keeping well out from the breaking waves, he cruised along the cliff. The boys kept a sharp eye on the location of the tunnel. As the boat passed it they were just able to distinguish the narrow opening in the rocks.

âI wonât be able to go in there after a while,â Tony remarked. âThe tideâs coming in. At high tide Iâll bet that tunnel is filled with water.â

Suddenly Tony swung his craft so hard to the right that the other boys lost their balance.

âSorry, fellows,â he said. âSaw a logâoh!â

He shut off his engine in a flash and leaned over the gunwale. His companions picked themselves up and asked what had happened.

âPropeller started to foul up with some wire on that log.â Tony began to peel off his clothes. âGet me some pliers, will you?â

Frank opened a locker and found a pair. Taking them, Tony dived overboard. A minute later he reappeared and climbed in. âIâm lucky,â he said. âJust plain lucky. Two seconds more and all that wire would have been wound around the prop and the log would have knocked it off.â

âGood night!â Chet exclaimed. âIt would have been a long swim home.â

Joe slapped Tony on the back. âGood work, boy. Iâd hate to see the Napoli out of commission.â

Chet and Frank hauled the log aboard, so it would not damage any other craft. âThis is a fence post with barbed wire!â Chet said. âWowee! Itâs good you spotted that log, Tony.â

Tony dressed, then started the engine. He cruised around for more than an hour, but the boys saw no sign of life about the base of the cliff. They could see the Pollitt house, but to their amazement no lights appeared in it as twilight came.

âHow much longer do you think we should stay out here?â Chet asked. âIâm getting hungry.â

âI have a few pretzels and a candy bar, but thatâs not much for four of us,â Joe remarked.

âAha!â crowed Tony. âI have a surprise for you! I stowed away a little food before we took off.â With that he pulled a paper bag from the locker and passed each boy a large sandwich, a piece of chocolate cake, and a bottle of lemon soda.

âYou deserve a medal,â Chet remarked as he bit into a layer of ham and cheese.

âYou sure do!â Frank agreed. âI think we should stay right here for a while and watch. Itâs my guess the smugglers will be on the job tonight. Donât forget that the Marco Polo is docking tomorrow morning.â

âI get it,â said Chet. âIf she lays offshore or steams in slowly, itâll give Ali Singh a chance to drop the stolen drugs overboard to Snattman.â

âCorrect,â said Frank.

Tony looked intently at the Hardys. âIs it your idea to keep Snattman from meeting Ali Singh? But what about your father? I thought we came out here to get a line on how to rescue him.â

The brothers exchanged glances, then Joe said, âOf course thatâs our main purpose, but we hope that we can do both.â

Twilight deepened into darkness and lights could be seen here and there through the haze. The cliff was only a black smudge and the house above was still unlighted.

Suddenly the boys heard a muffled sound. Tony slowed the Napoli and they listened intently.

âAnother motorboat,â Tony whispered.

The sound seemed to come from near the cliff. Straining their eyes in that direction, the four were at last able to distinguish a faint moving light.

âCan you head over that way, Tony?â Frank asked in a low voice. âAnd could you take a chance on turning off our lights?â

âSure. Here goes. The windâs blowing from the land, so our engine wonât be heard from the shore.â

The boys were tense with excitement as the Napoli moved slowly toward the light. As the boat crept nearer the cliff, they could barely distinguish the outline of a motorboat. The craft seemed to be making its way carefully out of the very face of the cliff.

âIt must have come from that tunnel!â Joe whispered to Frank.

âYes.â

The Napoli went closer, in imminent danger of being discovered or of being washed ashore onto the rocks. Finally the other boat slowed to a crawl. Then came the faint clatter of oars and low voices. The motorboat had evidently met a rowboat.

The next moment, with an abrupt roar, the motorboat turned and raced out to sea at an ever-increasing rate of speed.

âWhere can it be going?â said Tony, in amazement. âOut to meet the Marco Polo?â

âProbably,â Frank replied, âand weâd never catch it. I wonder where the rowboatâs going.â

The four boys waited in silence for several minutes. Then the rattle of oars came again. This time the sound was closer. The rowboat was coming toward them!

âWhatâll we do now?â Tony asked.

âTurn off your engine,â Frank whispered. Tony complied.

Through the gloom suddenly came snatches of conversation from the rowboat. ââa hundred poundsââ they heard a man say harshly, and then the rest of the sentence was lost. There was a lengthy murmur of voices, then, âI donât know. Itâs riskyââ

The wind died down just then and two voices could be heard distinctly. âAli Singhâs shareââ one man was saying.

âThatâs right. We canât forget him,â the gruff voice replied.

âI hope they get away all right.â

âWhat are you worryinâ about? Of course theyâll get away.â

âWeâve been spotted, you know.â

âItâs all your imagination. Nobody suspects.â

âThose boys at the houseââ

âJust dumb kids. If they come nosinâ around again, weâll knock âem on the head.â

âI donât like this rough stuff. Itâs dangerous.â

âWeâve got to do it or weâll end up in the pen. Whatâs the matter with you tonight? Youâre nervous.â

âIâm worried. Iâve got a hunch weâd better clear out of here.â

âClear out!â replied the other contemptuously. âAre you crazy? Why, this place is as safe as a church.â The man laughed sardonically. âHavenât we got all the squealers locked up? And tonight we make the big cleanup and get away.â

âWell, maybe youâre right,â said the first man doubtfully. âBut stillââ

His voice died away as the boat entered the tunnel

Joe grabbed Frankâs arm. âDid you hear that? All the squealers locked up? Iâll bet Dadâs one of them and heâs a prisoner somewhere around here.â

âAnd this is the hide-out of Snattman and the other smugglers he was after,â Frank added.

âI donât like this,â Chet spoke up. âLetâs leave here and get the police.â

Frank shook his head. âIt would take so long we might goof the whole thing. Tell you what. Joe and I will follow that rowboat through the tunnel!â

âHow?â

âOn foot or swim. I donât think itâs deep along the edges.â

âYou mean Chet and I will wait here?â Tony asked.

âNo,â Frank answered. âYou two beat it back to Bayport and notify the Coast Guard. Tell them weâre on the track of smugglers and ask them to send some men here.â

âAnd tell them our suspicions about Ali Singh and the Marco Polo,â Joe added. âThey can radio the captain to keep an eye on him.â

âOkay,â said Tony. âIâll do that. First Iâll put you ashore.â

âDonât go too close or youâll hit those rocks and wreck the boat,â Frank warned. âJoe and I can swim to shore. Then weâll work around into the tunnel and see what we can find. If we do discover anything, weâll wait at the entrance and show the men from the Coast Guard where to go when they get here.â

Tony edged the boat in as close to the dark shore as he dared without lights. Quickly Frank and Joe took off their slacks, T shirts, sweaters, and sneakers. They rolled them up, and with twine which Tony provided, tied the bundles on top of their heads. Then they slipped over the side into the water. The Napoli sped off.

Frank and Joe were only a few yards from the rocks and after a short swim emerged on the main-land.

âWell, here goes!â Joe whispered, heading for the tunnel.

CHAPTER XII

The Secret Passage

CAUTIOUSLY Frank and Joe made their way across the slippery rocks. Suddenly there was a loud splash as Joe lost his footing.

âAre you all right?â Frank whispered, as he came up to where his brother was standing in the shallow water at the edge of the cliff.

âYes. For a moment I sure thought Iâd sprained my ankle,â Joe replied tensely, âbut it seems to be okay now.â

âGive me your hand,â Frank whispered and quickly pulled Joe back onto the rocks.

The Hardys had landed at a point some twenty-five yards from the tunnel opening, but the climb over the treacherous rocks was so difficult that the distance seemed much longer. It was very dark in the shadow of the steep cliff. The waves breaking against the rocks had a lonely and foreboding sound.

âGood night!â Joe muttered. âArenât we ever coming to that tunnel?â

âTake it easy,â Frank advised. âIt canât be much farther.â

âI hope Tony and Chet will hurry back with help,â Joe said. âThis is a ticklish job.â

âIf anybodyâs on guard here, weâll certainly be at a disadvantage,â Frank remarked in a barely audible tone. âWatch out!â

By this time they had reached the entrance to the tunnel. After a few cautious steps they discovered that the narrow piece of land between the water and the base of the cliff was covered by a thick growth of bushes.

Frank turned to Joe. âIf we try to walk through all that stuff,â he whispered, âweâre sure to be heard. That is, if those men are in here some place.â

Joe grunted in agreement. âWhat shall we do?â

Tentatively, Frank put one foot into the water from the rock on which he was standing.

âIt isnât deep,â he said. âI guess we can wade through.â

The boys hugged the wall and started off. Fortunately, the water came only to their knees because there was a shelf of rocks all the way along. The brothersâ hearts beat wildly. What would they find ahead of them?

The boys had not heard a sound since entering the tunnel. It appeared that the men in the row. boat had gone on to some secret hiding place.

âI think Iâll risk my flashlight,â Frank said in a low voice as they reached the pond. âWe canât find out anything without it.â

He pulled one he always carried from its waterproof case and snapped it on. The yellow beam shone over the pond. There was no sign of the rowboat.

âHow do you think those men got out of here?â Joe asked. âDo you suppose thereâs another opening?â

Frank turned the flashlight onto the steep sides surrounding the water. âI donât see any. My guess is that those men hid the boat some place. Letâs make a thorough search.â

Slowly the brothers began to walk around the edge of the pond, brushing aside the heavy growth and peering among the bushes. They had about given up in despair as they reached the section by the far wall of the tunnel. Then, as Frank beamed the flashlight over the thicket, he exclaimed hoarsely, âLook!â

âA door!â Joe whispered tensely.

The door had been so cleverly concealed that it would not have been seen in full daylight except at close quarters. The glare of the flashlight, however, brought the artificial screen of branches and leaves into sharp relief against the dark cliffside.

âThis explains it,â Joe said. âThe men in the boat went through here. I wonder where it goes.â

In order to avoid detection, Frank extinguished his light before trying to open the door. He swung it open inch by inch, half expecting to find lights and people beyond. But there was only darkness. Luckily the door had made no noise. Frank turned on his light again.

Ahead was a watery passageway some ten feet wide and twenty-five feet long, with a ledge running along one side. At the end was a tiny wharf with a rowboat tied to a post.

âThis is fantastic!â Joe whispered. âAnd it must have been here a long time. Do you suppose itâs connected with the Pollitt place?â

âIf it is, it could mean old Mr. Pollitt was mixed up with the smugglers!â Frank answered. âHey, do you suppose Snattman is his nephew?â

Excited over this possible new angle to the case, Frank and Joe stepped onto the ledge. They dressed, then quietly inched forward. Reaching the wharf, they looked about them as Frank beamed his flashlight on the walls.

âHold it!â Joe whispered.

Directly ahead was a crude arch in the rock. Beyond it, the boys could see a steep flight of stone steps. Their hearts pounded with excitement.

âWeâve found it!â Frank whispered. âThis must be the secret passageway!â

âYes,â Joe agreed, âand from the distance weâve come Iâd figure that weâre right underneath the house on the cliff.â

âLetâs go up.â

The light cast strange shadows in the passage through the rocks. Water dripped from the walls. The boys tiptoed forward and stealthily began the ascent.

As they crept up the stairs, Frank flashed the light ahead of them. Shortly they could see that the steps ended at a heavy door. Its framework was set into the wall of rock. Above them was only a rocky ceiling.

When Frank and Joe reached the door, they hesitated. Both were thinking, âIf we go through that door and find the gang of smugglers, weâll never get out. But, on the other hand, we must find Dad!â

Frank stepped forward, pressed his ear against the door, and listened intently. There was not a sound beyond.

He turned off his light and looked carefully around the sides of the door to see if he could catch a glimmer of any illumination from the other side. There was only darkness.

âI guess thereâs no one inside,â he said to Joe. âLetâs see if we can open it.â

Frank felt for the latch. The door did not move. âIt must be locked,â he whispered.

âTry it again. Maybe itâs just stuck.â

Frank put his hand on the latch, this time also pushing the door with his shoulder. Suddenly, with a noise which echoed from wall to wall, the latch snapped and the door swung open.

Joe stepped forward, but Frank put out a restraining hand. âWait!â he cautioned. âThat noise may bring someone.â

Tensely, they stood alert for the slightest sound. But none came. Hopeful that there was no one in the area beyond, Frank switched on the flashlight.

The vivid beam cut the darkness and revealed a gloomy cave hewn out of the rock in the very center of the cliff. The boys wondered if it had been a natural cave. It was filled with boxes, bales, and packages distributed about the floor and piled against the walls.

âSmuggled goods!â Frank and Joe thought.

The fact that the majority of the boxes bore labels of foreign countries seemed to verify their suspicions.

Convinced that the cave was unoccupied, the boys stepped through the doorway and looked about for another door or opening. They saw none. Was this the end of the trail?

âBut it couldnât be,â the young sleuths thought. âThose men went some place.â

Bolts of beautiful silk had been tossed on top of some of the bales. Valuable tapestries were also lying carelessly around. In one corner four boxes were piled on top of one another. Frank accidentally knocked the flashlight against one of these and it gave forth a hollow sound.

âItâs empty,â he whispered.

An idea struck him that perhaps these boxes had been piled up to conceal some passage leading out of the secret storeroom. He mentioned his suspicion to Joe.

âBut how could the men pile the boxes up there after they went out?â his brother questioned.

âThis gang is smart enough for anything. Letâs move these boxes away and maybe weâll find out.â

Frank seized the topmost box. It was very light and he removed it from the pile without difficulty.

âI thought so!â Frank said with satisfaction. The flashlight had revealed the top of a door which had been hidden from view.

The boys lost no time in moving the other three boxes. Then Frank and Joe discovered how it was possible for the boxes to be piled up in such a position, in spite of the fact that the smugglers had left the cave and closed the door behind them.

Attached to the bottom of the door was a thin wooden platform that projected out over the floor of the cave and on this the boxes had been piled.

âVery clever,â Joe remarked. âWhenever any one leaves the cave and closes the door, the boxes swing in with the platform and it looks as though they were piled up on the floor.â

âRight. Well, letâs see where the door leads,â Frank proposed.

He snapped off his light and with utmost caution opened the door. It made no sound. Again there was darkness ahead.

âWhat a maze!â Frank whispered as he turned on his flash and beamed the light ahead.

Another stone-lined passage with a flight of steps at the end!

Suddenly Frank stiffened and laid a warning hand on his brotherâs arm. âVoices!â he said in a low tone and snapped off his light.

The boys listened intently. They could hear a manâs voice in the distance. Neither could distinguish what he was saying, for he was still too far away, but gradually the tones grew louder. Then, to the brothersâ alarm, they heard footsteps. Hastily they retreated into the secret cave.

âQuick! The door!â Frank urged.

They closed it quietly.

âNow the boxes. If those men come in here theyâll notice that the boxes have been moved!â He turned on the light but shielded it with his hand.

Swiftly Joe piled the empty boxes back onto the platform that projected from the bottom of the door. He worked as silently and quickly as possible, but could hear the footsteps drawing closer and closer.

Finally the topmost box was in place.

âOut the other door!â Frank hissed into Joeâs ear.

They sped across the floor of the cave toward the door opening onto the stairs they had recently ascended. But hardly had they reached it before they heard a rattle at the latch of the door on the opposite side of the cave.

âWe havenât time,â Frank whispered. âHide!â

The beam of the flashlight revealed a number of boxes close to the door. On top of these someone had thrown a heavy bolt of silk, the folds of which hung down to the floor. The brothers scrambled swiftly behind the boxes, pressing themselves close against the wall. They had just enough time to hide and switch out Frankâs light before they heard the other door open.

âThereâs a bunch of drugs in that shipment that came in three weeks ago,â they heard a husky voice say. âWeâll take it upstairs. Burke says he can get rid of it for us right away. No use leaving it down here. Got to make room for the new shipment.â

âRight,â the Hardys heard someone else reply. âAnything else to go up?â

âNo. Iâll switch on the light.â

There was a click, and suddenly the cave was flooded with light. It had been wired for electricity.

Frank and Joe crouched in their hiding place, holding their breaths in terror. Would they be discovered?

Footsteps slowly approached the boxes behind which they were concealed!

CHAPTER XIII

A Startling Discovery

FRANK AND JOE tried to crowd themselves into the smallest space possible as the men came nearer to their hiding place. The electric light bulb hanging from the center of the ceiling cast such a strong illumination over the cave that the boys felt certain they would be discovered.

The boxes were placed a small distance apart, and only the fact that folds of silk hung down over the open spaces between the boxes prevented the boys from being seen immediately. However, through a crack in one of the crates, the Hardys could just make out two husky-looking figures.

âHereâs some oâ that Japanese silk,â the boys heard one of the men say. âIâd better take a bolt of that up too. Burke said he could place some more of it.â

Instantly the same thought ran through both the brothersâ minds. If the man picked up the silk, they would surely be found!

âDonât be crazy!â the other man objected. âYou know you wonât get any credit for pushinâ a sale. Why break your arm lugginâ all that stuff upstairs?â

âWell,â the first man explained in a whining tone, âI thought maybe we could get rid of some more of this swag and make ourselves a little extra dough.â

âNaw,â his companion snarled. âI can tell you ainât been with this gang long. You never get any thanks around here for thinkinâ. If Burke donât take the extra stuff, the bossâll make you bring it all the way down again.â

âMaybe youâre right.â

âSure Iâm right! My idea for the rest of us in this gang is to do just what Snattman tells us to and no more.â

âYou got somethinâ there, Bud. Okay. Weâll just take up the package of drugs and leave the rest.â

To the boysâ relief the men turned away and went over to the other side of the room. Frank and Joe did not dare peer out, but they could hear the sound of boxes being shifted.

Then came the words, âAll set. Iâve got the packages. Letâs go!â

The switch was snapped and the cave was plunged into darkness. The Hardys began to breathe normally again. The door to the corridor closed and faintly the boys could detect the menâs footsteps as they ascended the stairs at the end of it.

When they had died away completely, Frank switched on the flashlight. âWow!â he said, giving a tremendous sigh of relief. âThat was a close call! I sure thought they had us.â

âMe too,â Joe agreed. âWe wouldnât have had a chance with that pair. Looked like a couple of wrestlers.â

âDo we dare follow them?â

âYou bet. Iâd say weâve solved the smuggling mystery, but weâve still got to find out if theyâre holding Dad,â Joe said grimly.

âWeâll have to watch our step even more carefully. We donât want to walk right into the whole ring of smugglers,â Frank reminded him.

âRight. I donât crave anything worse than what weâve just gone through,â said Joe. âI thought Iâd die of suspense while that pair was in here.â

They crossed the room, opened the door, and started up the dark passageway. Presently they were confronted by the flight of steps. Part way up there was a landing, then more steps with a door at the top.

âIâll go first,â Frank offered. âStick close behind me. I think Iâll keep the flash off.â

âThatâs right,â Joe agreed. âSnattman might have a guard at the top and thereâs no use advertising our presence.â

Step by step, the boys crept upward in the inky blackness. Then they found themselves on a crude landing of planks. Carefully they felt their way along the side of the rock wall until they reached the next flight of steps.

Here the brothers stopped again to listen. Silence.

âSo far, so good,â Frank whispered. âBut somehow I donât like this whole thing. I have a feeling weâre walking into a trap.â

âWe canât quit now,â Joe answered. âBut I admit Iâm scared.â

Still groping in the dark, the boys climbed up and up until they were nearly winded.

âWhere are we?â Joe panted. âI feel as if Iâve been climbing stairs for an hour!â

âMe too,â Frank agreed. âThe cliff doesnât look this high from the outside.â

They rested a minute, then continued their journey. Groping around, they finally reached another door. Frank hunted for the door handle. Finding it, he turned the knob ever so slightly to find out if the door was locked.

âI can open it,â Frank said in Joeâs ear, âbut weâd better wait a few minutes.â

âEvery second is vital if Dadâs a prisoner,â Joe objected.

Frank was about to accede to his brotherâs urging when both boys heard footsteps on the other side of the door. A chill ran down their spines.

âShall we run?â Joe said fearfully.

âIt wouldnât do us any good. Listen!â

There came a queer shuffling sound and a sigh from somewhere beyond the door. That was all.

âSomeoneâs in there,â Frank breathed. Joe nodded in the darkness.

The boys did not know what to do. The gang might have posted a sentry. If there was only one, the Hardys might be able to jump the man and disarm him. However, they probably could not do it without making some noise and attracting the attention of the rest of the smugglers.

Frank and Joe gritted their teeth. They couldnât give up now!

As they were trying to decide how to proceed, the situation took an unexpected turn. A door slammed in the distance. Then came the murmur of voices and the sound of advancing footsteps.

âThis nonsense has gone far enough,â a man said angrily. âHeâll write that note at once, or Iâll know the reason why.â

The boys started. The voice was that of the man who had ordered them to leave the pond during the afternoon.

âThatâs right, chief!â another voice spoke up. âMake him do as you say and get the heat off us until weâve got all the loot moved.â

âIf he doesnât write it, heâll never get out of here alive,â the first man promised coldly.

Instantly Frank and Joe thought of the note their mother had received. Was the man these smugglers were talking about their father? Or was he someone elseâmaybe Jones, who was to be forced to obey them or perhaps lose his life?

The speakers went a short distance beyond the door behind which Frank and Joe were standing. Then they heard the click of a switch. A faint beam of yellow light shone beneath the door. The brothers figured there was a corridor beyond and three or four men had entered a room opening from it.

âWell, I see youâre still here,â said the man who had been addressed as chief. âYouâll find this an easier place to get into than out of.â

A weary voice answered him. The tones were low, so the boys pressed closer to the door. But try as they might, they could not distinguish the words.

âYouâre a prisoner here and youâll stay here until you die unless you write that note.â

Again the weary voice spoke, but the tones were still so indistinct that the boys could not hear the answer.

âYou wonât write it, eh? Weâll see what we can do to persuade you.â

âLet him go hungry for a few days. Thatâll persuade him!â put in one of the other men. This brought a hoarse laugh from his companions.

âYouâll be hungry enough if you donât write that letter,â the chief agreed. âAre you going to write it?â

âNo,â the boys barely heard the prisoner answer.

The chief said sourly, âYouâve got too much on us. We canât afford to let you go now. But if you write that letter, weâll leave you some food, so that you wonât starve. Youâll break out eventually, but not in time to do us any harm. Well, what do you say? Want some food?â

There was no reply from the prisoner.

âGive his arm a little twist,â suggested one of the smugglers.

At this the Hardysâ blood boiled with rage. Their first impulse was to fling open the door and rush to the aid of the person who was being tormented. But they realized they were helpless against so many men. Their only hope lay in the arrival of the Coast Guard men, but they might come too late!

âChief, shall I give this guy the works?â one of the smugglers asked.

âNo,â the leader answered quickly. âNone of that rough stuff. Weâll do it the easy wayâstarvation. Iâm giving him one more chance. He can write that note now or weâll leave him here to starve when we make our getaway.â

Still there was no reply.

To Frankâs and Joeâs ears came a scraping sound as if a chair was being moved forward.

âYou wonât talk, eh?â The leaderâs voice grew ugly.

There was a pause of a few seconds, then suddenly he shouted, âWrite that note, Hardy, or youâll be sorryâas sure as my nameâs Snattmanlâ

CHAPTER XIV

Captured

JOE gave a start. âIt is Dad!â he whispered hoarsely. âHe found the smugglersâ hide-out!â

Frank nudged his brother warningly. âNot so loud.â

The boysâ worst fears were realizedâtheir father was not only a prisoner of the smugglers, but also his life was being threatened!

âWrite that note!â Snattman demanded.

âI wonât write it,â Fenton Hardy replied in a weak but clear voice.

The chief persisted. âYou heard what I said. Write it or be left here to starve.â

âIâll starve.â

âYouâll change your mind in a day or two. You think youâre hungry now, but wait until we cut off your food entirely. Then youâll see. Youâll be ready to sell your soul for a drop of water or a crumb to eat.â

âI wonât write it.â

âLook here, Hardy. Weâre not asking very much. All we want you to do is write to your wife that youâre safe and tell her to call off the police and those kids of yours. Theyâre too nosy.â

âSooner or later someone is going to trace me here,â came Mr. Hardyâs faint reply. âAnd when they do, I can tell them enough to send you to prison for the rest of your life.â

There was a sudden commotion in the room and two or three of the smugglers began talking at once.

âYouâre crazy!â shouted Snattman, but there was a hint of uneasiness in his voice. âYou donât know anything about me!â

âI know enough to have you sent up for attempted murder. And youâre about to try it again.â

âYouâre too smart, Hardy. Thatâs all the more reason why youâre not going to get out of here until weâve gone. And if you donât co-operate youâll never make it. Our next big shipmentâs coming through tonight, and then weâre skipping the country. If you write that letter, youâll live. If you donât, itâs curtains for you!â

Frank and Joe were shaken by the dire threats. But they must decide whether to go for help, or stay and risk capture and try to rescue their father.

âYou canât scare me, Snattman,â the detective said. âI have a feeling your time is up. Youâre never going to get that big shipment.â

The detectiveâs voice seemed a little stronger, the boys felt.

Snattman laughed. âI thought you were smart, but youâre playing a losing game, I warn you. And how about your family? Are you doing them a service by being so stubborn?â

There was silence for a while. Then Fenton Hardy answered slowly:

âMy wife and boys would rather know that I died doing my duty than have me come back to them as a protector of smugglers and criminals.â

âYou have a very high sense of duty,â sneered Snattman. âBut youâll change your mind. Are you thirsty?â

There was no reply.

âAre you hungry?â

Still no answer.

âYou know you are. And itâll be worse. Youâll die of thirst and starvation unless you write that note.â

âIâll never write it.â

âAll right. Come on, men. Weâll leave him to himself for a while and give him time to think about it.â

Frank squeezed Joeâs arm in relief and exhilaration. There was still a chance to save their father!

Footsteps echoed as Snattman and the others left the room and walked through the corridor. Finally the sounds died away and a door slammed.

Joe made a move toward the door, but Frank held him back. âWeâd better wait a minute,â he cautioned, âThey may have left someone on guard.â

The boys stood still, listening intently. But there were no further sounds from beyond the door. At length, satisfied that his father had indeed been left alone, Frank felt for the knob.

Noiselessly he opened the door about an inch, then peered into the corridor which was dimly lighted from one overhead bulb. There was no sign of a guard.

Three doors opened from the corridorâtwo on the opposite side from where the brothers were standing and another at the end.

The passage was floored with planks and had a beamed ceiling like a cellar. Frank and Joe quickly figured where their father was and sped across the planks to the room. They pushed open the door of the almost dark room and peered inside. There was a crude table and several chain. In one corner stood a small cot. On it lay Fenton Hardy. He was bound hand and foot to the bed and so tightly trussed that he was unable to move more than a few inches in any direction. He was flat on his back, staring up at the ceiling of his prison. On a chair beside the cot was a sheet of paper and a pencil, evidently the materials for the letter Snattman had demanded he write.

âDad!â Frank and Joe cried softly.

The detective had not heard the door open, but now he looked at his sons in amazement and relief. âYouâre here!â he whispered. âThank goodness!â

The boys were shocked at the change in their fatherâs appearance. Normally a rugged-looking man, Fenton Hardy now was thin and pale. His cheeks were sunken and his eyes listless.

âWeâll have you out of here in a minute,â Frank whispered.

âHurry!â the detective begged. âThose demons may be back any minute!â

Frank pulled out his pocketknife and began to work at the ropes that bound his father. But the knife was not very sharp and the bonds were thick.

Joe discovered that he did not have his knife with him. âIt probably slipped out of my pocket when we undressed on the Napoli,â he said.

âMineâs gone too,â Mr. Hardy told them. âSnattman took everything I had in my pockets, including concentrated emergency rations. Have you anything sweet with you?â

Joe pulled out the candy bar from his pocket and held it, so Mr. Hardy could take a large bite of the quick-energy food. Meanwhile, his eyes roamed over the room in search of something sharp which he might use to help Frank with the ropes. He saw nothing.

Mr. Hardy finished the candy bar, bite by bite. Now Joe started to help Frank by trying to untie the knots. But they were tight and he found it almost impossible to loosen them.

Minutes passed. Frank hacked at the ropes, but the dull blade made little progress. Joe worked at the obstinate knots. Fenton Hardy could give no assistance. All were silent. The only sound was the heavy breathing of the boys and the scraping of the knife against the ropes.

At last Frank was able to saw through one of the bonds and the detectiveâs feet were free. His son pulled the ropes away and began to work on the ones that bound his fatherâs arms. As he reached over with the knife there came a sound that sent a feeling of terror through the Hardys.

It was a heavy footstep beyond the corridor door. Someone was coming back!

Frank worked desperately with the knife, but the ropes still held stubbornly. The dull blade seemed to make almost no impression. But at last a few strands parted. Finally, with Fenton Hardy making a mighty effort and Joe clawing at the rope with his fingers, it snapped.

The detective was free!

But the footfalls of the approaching smuggler came closer.

âQuick!â Frank whispered, as he flung the ropes aside.

âIâI canât hurry!â Mr. Hardy gasped. âIâve been tied up so long my feet and legs are numb.â

âBut weâve got to hurry, Dad!â Frank said excitedly. âSee if you can stand up.â

âIâllâIâll do my best,â his father replied, as the boys rubbed his legs vigorously to restore full circulation.

âWe must run before those crooks come!â Joe said tensely.

Fenton Hardy got to his feet as hastily as he could. But when he stood up, the detective staggered and would have fallen if Frank had not taken his arm. He was so weak from hunger that a wave of dizziness had come over him. He gave his head a quick shake and the feeling passed.

âAll right. Letâs go,â he said, clinging to both boys for support.

The three hastened out the door of the room and across the corridor to the cave. As they entered it, Mr. Hardyâs knees buckled. In desperation his sons picked him up.

âYou go on,â he whispered. âLeave me here.â

âIâm sure all of us can make it,â Joe said bravely.

They reached the far door, but the delay had been costly. Just as Frank opened it, clicking off his flashlight, the corridor door was flung open and the ceiling light snapped on.

Frank leaped directly at the smuggler

Frank and Joe had a confused glimpse of the dark man whom they had seen at the pond that afternoon. Snattman! Two rough-looking companions crowded in behind him.

âWhatâs going on here?â Snattman exclaimed, apparently not recognizing the group for a moment.

âItâs the Hardys!â one of the other men cried out

The fleeing trio started down the steps but got no farther than the landing when the smugglers appeared at the stairway and rushed down after them.

âStop!â cried Snattman, jumping down the last three steps and whipping an automatic from his hip pocket. The place was flooded with light.

As Snattman drew closer, Frank crouched for a spring, then leaped directly at the smuggler. He struck at the manâs wrist and the revolver flew out of his grasp. It skidded across the landing and clattered down the steps. Frank closed in on the man. Snattman had been taken completely by surprise. Before he could defend himself, Frank forced him against the wall.

Joe, in the meantime, with a swift uppercut had kayoed one of the other men. And Mr. Hardy, whose strength had partially returned, was battling the third as best he could.

But at this moment the boys saw their fatherâs adversary dodge to the wall and press a button. In an instant an alarm bell sounded in the corridor. Within seconds a new group of Snattmanâs gang appeared. As some held drawn revolvers, others overpowered the three Hardys.

In the face of the guns, father and sons were forced to surrender and return to the room where Mr. Hardy had been held captive before.

Within five minutes Fenton Hardy was bound again to the cot, while Frank and Joe, trussed up and unable to move, were tied to two chairs.

CHAPTER XV

Dire Threats

SNATTMAN, once he had recovered from his first consternation and surprise at finding the Hardy boys in the underground room, was in high good humor. He turned to his men.

âJust in time,â he gloated, rubbing his hands together in satisfaction. âIf we hadnât come here when we did, theyâd have all escaped!â

The Hardy boys were silent, sick with despair. They had been sure they were going to succeed in rescuing their father and now the three of them were prisoners of the smuggling gang.

âWhat are we goinâ to do with these guys?â asked one of the men.

The voice sounded familiar to the boys and they looked up. They were not surprised to see that the man was the red-haired one they had met at the Pollitt place when Frank had discovered his fatherâs cap.

âDo with them?â Snattman mused. âThatâs a problem. Weâve got three on our hands now instead of one. Best thing is to leave them all here and lock the door.â

âAnd put gags in their traps,â suggested a burly companion.

Red objected. âAs long as the Hardys are around here, theyâre dangerous. They almost got away this time.â

âWell, what do you suggest?â

âWe ought to do what I wanted to do with the old man in the first place,â Red declared doggedly.

âYou mean get rid of them?â Snattman asked thoughtfully.

âSure. All of them!â

âWellââ Snattman gazed at Mr. Hardy with a sinister look.

âI should think you have enough on your conscience already, Snattman!â the detective exclaimed. âI donât expect you to let me go,â he added bitterly. âBut release my boys. They havenât done anything but try to rescue their father. Youâd do the same thing yourself.â

âOh yeah?â Snattman sneered. âDonât bother yourself about my conscience. Nobodyâbut nobody ever stands in my way.

âAs to letting these boys go, what kind of a fool do you take me for?â Snattman shouted. âIf you three are such buddies, you ought to enjoy starving together.â

The smuggler laughed uproariously at what he considered a very funny remark.

Frankâs and Joeâs minds were racing with ideas. One thing stood out clearly. Snattman had said the Hardys almost escaped. This meant that no one was guarding the secret entrance!

âIf we can only hold out a while,â they thought, âthe Coast Guard will arrive. Thereâll be nobody to stop them from coming up here.â

Then, suddenly, a shocking possibility occurred to the boys. Suppose the Coast Guard could not find the camouflaged door opening from the pond!

During the conversation four of the smugglers had been whispering among themselves in the corridor. One of them now stepped into the room and faced Snattman.

âIâd like a word with you, chief,â he began.

âWhat is it now?â The smugglerâs voice was surly.

âItâs about whatâs to be done with the Hardys, now that weâve got âem,â the man said hesitantly. âItâs your business what you do to people who make it tough for you when youâre on your own. But not in our gang. Weâre in this for our take out of the smugglinâ, and we wonât stand for too much rough stuff.â

âThatâs right!â one of the other men spoke up.

âIs that so?â Snattmanâs upper lip curled. âYou guys are gettinâ awful righteous all of a sudden, arenât you? Look out or Iâll dump the lot of you!â

âOh, no, you wonât,â replied the first man who had addressed him. âWeâre partners in this deal and weâre goinâ to have our full share of what comes in. We ainât riskinâ our lives for love, you know.â

âWeâve got another idea about what to do with these three prisoners,â a third smuggler spoke up. âI think itâs a good one.â

âWhat is it?â Snattman asked impatiently.

âWeâve been talkinâ about Ali Singh.â

Frank and Joe started and listened intently.

âWhat about him?â Snattman prodded his assistant.

âTurn the prisoners over to him. Heâs got a friend named Foster whoâs captain of a boat sailinâ to the Far East tonight. Put the Hardys on board that ship,â the first smuggler urged.

Snattman looked thoughtful. The idea seemed to catch his fancy.

âNot bad,â he muttered. âI hadnât thought of Ali Singh. Yes, heâd take care of them. Theyâd never get back here.â He smiled grimly.

âFrom what he told me about that friend of his, the captainâd probably dump the Hardys overboard before they got very far out,â the man went on smugly. âSeems like he donât feed passengers if he can get rid of âem!â

âAll the better. We wouldnât be responsible.â

âLeave them to Ali Singh.â Red chuckled evilly. âHeâll attend to them.â

Snattman walked over to the cot and looked down at Mr. Hardy. âItâs too bad your boys had to come barging in here,â he said. âNow the three of you will have to take a little ocean voyage.â He laughed. âYouâll never get to the Coast Guard to tell your story.â

The detective was silent. He knew further attempts at persuasion would be useless.

âWell,â said Snattman, âhavenât you anything to say?â

âNothing. Do as you wish with me. But let the boys go.â

âWeâll stick with you, Dad,â said Frank quickly.

âOf course!â Joe added.

âYou sure will,â Snattman declared. âIâm not going to let one of you have the chance of getting back to Bayport with your story.â

The ringleader of the smugglers stood in the center of the room for a while, contemplating his captives with a bitter smile. Then he turned suddenly on his heel.

âWell, theyâre safe enough,â he told Red. âWe have that business with Burke to take care of. Come on, men, load Burkeâs truck. If any policemen come along and find it in the lane weâll be done for.â

âHow about them?â asked Red, motioning to the Hardys. âShouldnât they be guarded?â

âTheyâre tied up tight.â Snattman gave a short laugh. âBut I guess weâd better leave one guard, anyway. Malloy, you stay here and keep watch.â

Malloy, a surly, truculent fellow in overalls and a ragged sweater, nodded and sat down on a box near the door. This arrangement seemed to satisfy Snattman. After warning Malloy not to fall asleep on the job and to see to it that the prisoners did not escape, he left the room. He was followed by Red and the other smugglers.

A heavy silence fell over the room after the departure of the men. Malloy crouched gloomily on the box, gazing blankly at the floor. The butt of a revolver projected from his hip pocket.

Frank strained against the ropes that bound him to the chair. But the smugglers had done their task well. He could scarcely budge.

âWeâll never get out of this,â he told himself ruefully.

Joe was usually optimistic but this time his spirits failed him. âWeâre in a tough spot,â he thought. âIt looks as if weâll all be on that ship by morning.â

To lighten their spirits the Hardys began to talk, hoping against hope to distract the guard and perhaps overpower him.

âShut up, you guys!â Malloy growled. âQuit your talking or Iâll make it hot for you!â He tapped his revolver suggestively.

After that, a melancholy silence fell among the prisoners. All were downhearted. It looked as if their fate truly were sealed.

CHAPTER XVI

Quick Work

IN DESPAIR the boys glanced over at their father on the cot. To their surprise they saw that he was smiling.

Frank was about to ask him what he had found amusing about their predicament when his father shook his head in warning. He looked over at the guard.

Malloy was not watching the prisoners. He sat staring at the floor. Occasionally his head would fall forward, then he would jerk it back as he struggled to keep awake.

âSnattman sure made a poor selection when he chose Malloy as guard,â the boys thought.

Several times the burly man straightened up, stretched his arms, and rubbed his eyes. But when he settled down again, his head began to nod.

In the meantime, the boys noticed their father struggling with his bonds. To their amazement he did not seem to be so tightly bound as they had thought. Both of them tried moving but could not budge an inch.

The boys exchanged glances, both realizing what had happened. âDad resorted to an old trick!â Frank told himself, and Joe was silently fuming, âWhy didnât we think of it?â

Mr. Hardy had profited by his previous experience. When the smugglers had seized the detective and tied him to the cot for the second time, he had used a device frequently employed by magicians and professional âescape artistsâ who boast that they can release themselves from tightly tied ropes and strait jackets.

The detective had expanded his chest and flexed his muscles. He had also kept his arms as far away from his sides as he could without being noticed. In this way, when he relaxed, the ropes did not bind him as securely as his captors intended.

âOh, why were Frank and I so dumb!â Joe again chided himself.

Frank bit his lip in utter disgust at not having remembered the trick. âBut thenââhe eased his conscienceââDad didnât think of it the first time, either.â

Mr. Hardy had discovered that the rope binding his right wrist to the cot had a slight slack in it. He began trying to work the rope loose. This took a long time and the rough strands rubbed his wrist raw. But at last he managed to slide his right hand free.

âHurray!â Frank almost shouted. He glanced at the guard. Malloy appeared to be sound asleep. âHope heâll stay that way until we can escape,â Frank wished fervently.

He and Joe watched their father in amazement, as they saw him grope for one of the knots. The detective fumbled at it for a while. It was slow work with only his one hand free. But the boys knew from his satisfied expression that the smugglers in their haste apparently had not tied the knots as firmly as they should have.

At this instant the guard suddenly lifted his head, and Mr. Hardy quickly laid his free hand back on the cot. He closed his eyes as if sleeping and his sons followed his example. But opening their lids a slit, they watched the smuggler carefully.

The guard grunted. âTheyâre okay,â he mumbled. Once more he tried to stay awake but found it impossible. Little by little his head sagged until his chin rested on his chest. Deep, regular breathing told the prisoners he was asleep.

Mr. Hardy now began work again on the knot of the rope that kept his left arm bound to the cot. In a matter of moments he succeeded in loosening it and the rope fell away from his arm.

After making sure the guard was still asleep, the detective sat up on the cot and struggled to release his feet. This was an easier task. The smugglers had merely passed a rope around the cot to hold the prisonerâs feet. A few minutesâ attention was all that was necessary for the boysâ father to work his way loose.

âNow heâll release us,â Joe thought excitedly, âand we can escape from here!â

As Fenton Hardy tiptoed toward his sons, the board floor squeaked loudly. The guard muttered again, as if dreaming, shook his head, then sat up.

âOh, no!â Frank murmured, fearful of what would happen. He saw his father pick up a white rag someone had dropped.

A look of intense amazement crossed Malloyâs face. As he opened his mouth to yell for help, Fenton Hardy leaped across the intervening space and flung himself on the smuggler.

âKeep quiet!â the detective ordered.

Malloy had time only to utter a muffled gasp before the detective clapped a hand over the guardâs mouth, jammed the rag in it, and toppled him to the floor. The two rolled over and over in a desperate, silent struggle. The boys, helpless, looked on, their fears mounting. They knew their father had been weakened by his imprisonment and hunger, and the guard was strong and muscular. Nevertheless, the detective had the advantage of a surprise attack. Malloy had had no time to collect his wits.

Frank and Joe watched the battle in an agony of suspense. If only they could join the fight!

Mr. Hardy still had the advantage, for he could breathe better than his opponent. But suddenly Malloy managed to raise himself to his knees. He reached for the revolver at his hip.

âLook out, Dad!â Frank hissed. âHeâs got his gun!â

Quick as a flash the detective landed a blow on the guardâs jaw. Malloy blinked and raised both hands to defend himself as he fell to the ground. Mr. Hardy darted forward and pulled the revolver out of the manâs side pocket.

âNo funny business!â the detective told him in a low voice.

Without being told, Malloy raised his hands in the air. He sat helplessly on the floor, beaten.

âHeâs got a knife too, Dad,â Joe said quietly. âWatch that.â

âThanks, Joe,â his father replied. Then, motioning with the pistol, he said, âAll right. Letâs have the knife!â

Sullenly the guard removed the knife from its leather sheath at his belt and handed it to Mr. Hardy.

Frank and Joe wanted to shout with joy, but merely grinned at their father.

Still watching Malloy, the detective walked slowly backward until he reached Joeâs side. Without taking his eyes from the smuggler, he bent down and with the knife sliced at the ropes that bound his son. Fortunately, the knife was sharp and the ropes soon were cut.

âBoy, that feels good, Dad. Thanks,â Joe whispered.

He sprang from the chair, took the knife, and while his father watched Malloy, he cut Frankâs bonds.

âMalloy,â Mr. Hardy ordered, âcome over here!â

He motioned toward the bed and indicated by gestures that the smuggler was to lie down on the cot. Malloy shook his head vigorously, but was prodded over by Joe. The guard lay down on the cot.

The ropes which had held Mr. Hardy had not been cut. Quickly Frank and Joe trussed up Malloy just as their father had been tied, making certain that the knots were tight. As a final precaution they pushed in the gag which was slipping and with a piece of rope made it secure.

The whole procedure had taken scarcely five minutes. The Hardys were free!

âWhat now?â Frank asked his father out of earshot of Malloy. âHide some place until the Coast Guard gets here?â Quickly he told about Tony and Chet going to bring the officers to the smugglersâ hide-out.

âBut they should have been here by now,â Joe whispered. âThey probably havenât found the secret door. Letâs go down and show them.â

This plan was agreed upon, but the three Hardys got no farther than the top of the first stairway when they heard rough, arguing voices below them.

âThey canât be Coast Guard men,â said Mr. Hardy. âWeâll listen a few seconds, then weâd better run in the other direction. I know the way out to the grounds.â

From below came an ugly, âYou double-crosser, you! This loot belongs to the whole gang and donât you forget it!â

âListen,â said the second voice. âI donât have to take orders from you. I thought we was pals. Now you donât want to go through with the deal. Whoâs to know if we got ten packages or five from that friend oâ Ali Singhâs?â

âOkay. And the stuffâll be easier to get rid of than those drugs. Theyâre too hot for me. Snattman can burn for kidnapinâ if he wants toâI donât.â

The voices had now become so loud that the Hardys did not dare wait another moment. âCome on!â the boysâ father urged.

He led the way back to the corridor and along it to the door at the end. Suddenly Frank and Joe noticed him falter and were afraid he was going to faint. Joe recalled that his father had had no food except the candy bar. Ramming his hands into his pockets, he brought out another bar and some pieces of pretzel. Quickly he filled both his fatherâs hands with them. Mr. Hardy ate them hungrily as his sons supported him under his arms and assisted him to the door.

As Frank quietly opened it, and they saw a stairway beyond, the detective said, âThese steps will bring us up into a shed near the Pollitt house. Thereâs a trap door. Thatâs the way Snattman brought me down. Got your lights? We havenât any time to lose.â Mr. Hardy seemed stronger already. âIâll take the lead.â

As they ascended, Frank and Joe wondered if they would come out in the shed where they had seen the man named Klein picking up small logs.

When the detective reached the top of the stairs he ordered the lights out and pushed against the trap door. He could not budge it.

âYou try,â he urged the boys. âAnd hurry! Those men we heard may discover Malloy.â

âAnd then things will start popping!â Frank murmured.

The boys heaved their shoulders against the trap door. In a moment there came the rumble of rolling logs. The door went up easily.

Frank peered out. No one seemed to be around. He stepped up into the shed and the others followed.

The three stood in silence. The night was dark. The wind, blowing through the trees, made a moaning sound. Before the Hardys rose the gloomy mass of the house on the cliff. No lights could be seen.

From the direction of the lane came dull, thudding sounds. The boys and their father assumed the smugglersâ truck was being loaded with the goods which were to be disposed of by the man named Burke.

Suddenly the Hardys heard voices from the corridor they had just left. Quickly Frank closed the trap door and Joe piled up the logs. Then, silently, the Hardys stole out into the yard.

CHAPTER XVII

Hostages

LITHE as Indians the three Hardys hurried across the lawn and disappeared among the trees. They headed for the road, a good distance away.

âI hope a bus comes along,â Frank said to himself. âThen we can get to a phone and reportââ

His thought was rudely interrupted as the boys and their father heard a sound that struck terror to their heartsâthe clatter of the logs tumbling off the trap door!

An instant later came a hoarse shout. âChief! Red! The Hardys got away! Watch out for them!â

âHe must be one of the men we heard coming up from the shore,â Joe decided. âThey must have found Malloy trussed up!â

Instantly the place became alive with smugglers flashing their lights. Some of the men ran from the truck toward the road, shouting. Others began to comb the woods. Another man emerged from the trap door. He and his companion dashed to the ocean side of the house.

Two burly smugglers flung open the kitchen door and ran out. One shouted, âThey ainât in the house!â

âAnd theyâre not down at the shore!â the other yelled. âI just talked to Klein on the phone down there.â

âYou guys better not let those Hardys get away!â Snattmanâs voice cut through the night. âItâll be the pen for all of you!â

âFenton Hardyâs got a gun! He took Malloyâs!â came a warning voice from the far side of the house. The two men who had gone to the front now returned. âHe never misses his mark!â

When the fracas had started, the detective had pulled his sons to the ground, told them to lie flat, face down, and not to move. Now they could hear the pounding steps of the smugglers as they dashed among the trees. The boysâ hearts pounded wildly. It did not seem possible they could be missed!

Yet man after man ran within a few yards of the three prone figures and dashed on toward the road. Presently Mr. Hardy raised his head and looked toward the Pollitt mansion.

âBoys,â he said tensely, âweâll make a run for the kitchen door. The men wonât expect us to go there.â

The three arose. Swiftly and silently they crossed the dark lawn and slipped into the house. Apparently no one had seen them.

âWhen Snattman doesnât find us outdoors,â Joe whispered, âwonât he look here to make sure?â

âYes,â Mr. Hardy replied. âBut by that time I hope the Coast Guard and State Police will arrive.â

âJoe and I found a hidden stairway to the attic,â Frank spoke up. âSnattman wonât think of looking in it. Letâs hide up there.â

âYou forget the ghost,â Joe reminded his brother. âHe knows we found that stairway.â

âNevertheless, Frankâs suggestion is a good one,â Mr. Hardy said. âLetâs go to the attic. Were any clothes hanging in the closet that might be used to conceal the door?â

âYes, a manâs bathrobe on a rod.â

The Hardys did not dare use a light and had to make their way along by feeling walls, and the stair banister, with Frank in the lead and Mr. Hardy between the boys. Reaching the second floor, Frank looked out the rear window of the hall.

âThe smugglers are coming back!â he remarked in a low voice. âThe lights are heading this way!â

The Hardys doubled their speed, but it was still slow going, for they banged into chairs and a wardrobe as Frank felt his way along the hall toward the bedroom where the hidden staircase was.

Finally the trio reached it. Just as Frank was about to open the door to the attic, a door on the first floor swung open with a resounding bang.

âScatter and search every room!â Snattmanâs crisp voice rang out.

âWeâre trapped!â Joe groaned.

âMaybe not,â Frank said hopefully. âI have a hunch Klein was the ghost. Itâs possible that heâs the only one who knows about this stairway and heâs down at the shore.â

âWeâll risk going up,â Mr. Hardy decided. âBut not a sound.â He slid the bathrobe across the rod, so that it would hide the door.

âThe stairs creak,â Joe informed him.

Mr. Hardy told his sons to push down the treads slowly but firmly with their hands and hold them there until they put one foot between them and then raised up to their full weight.

âAnd lean forward, so you wonât lose your balance,â he warned.

Fearful that he could not accomplish this, Frank opened the door carefully and started up in the pitch blackness. But the dread thought of capture made him use extreme caution and he reached the attic without having made a sound.

After closing the door, Joe and his father quickly followed. The three moved noiselessly to a spot out of sight of the stairway behind a large trunk. They sat down and waited, not daring even to whisper. From downstairs they could hear running footsteps, banging doors, and loud talk.

âNot here!â

âNot here!â

âNot here!â

The search seemed to come to an end, for the second-floor group had gathered right in the room where the secret stairway was.

âThis is it! The end! Theyâre going to search up here!â Frank thought woefully.

His father reached over and grasped a hand of each of his sons in a reassuring grip. Someone yanked open the closet door. The Hardys became tense. Would the robe over the entrance to the secret stairway fool him?

âEmpty!â the man announced and shut the door. The smugglers went downstairs.

There were fervent handshakes among the detective and his sons. Other than this they did not move a muscle of their bodies, although they inwardly relaxed.

Now new worries assailed the Hardys. It was possible that Snattman and his gang, having been alerted, would move out and disappear before the police or Coast Guard could get to the house on the cliff.

Frankâs heart gave a jump. He suddenly realized that his father was hiding to protect his sons. Had he been alone, the intrepid detective would have been downstairs battling to get the better of Snattman and break up the smuggling ring.

âWhat a swell father he is!â Frank thought. Then another idea came to him. âMaybe being here isnât such a bad plan after all. Dad might have been fatally shot if heâd been anywhere else on the property.â

A moment later the Hardys again became aware of voices on the second floor. They recognized one as Snattmanâs, the other as Kleinâs.

âYeah, thereâs a secret stairway to the attic,â Klein announced. âI found it when I was playinâ ghost. And them Hardy boysâthey found it too. Iâll bet my last take on those rare drugs weâre gettinâ tonight that the dick and his sons are up in that attic!â

The Hardysâ spirits sank. They were going to be captured again after all!

They heard the door at the foot of the stairway open. âGo up and look, Klein,â ordered Snattman.

âNot me. Fenton Hardy has Malloyâs gun.â

âI said go up!â

âYou canât make me,â Klein objected in a whining tone. âIâd be a sure target âcause I couldnât see him. Heâd be hiding and let me have it so quick Iâd never know what hit me.â

Despite the grave situation, Frankâs and Joeâs faces were creased in smiles, but they faded as Snattman said, âIâll go myself. Give me that big light!â

Suddenly a brilliant beam was cast into the attic. It moved upward, accompanied by heavy footsteps.

âHardy, if you want to live, say so!â Snattman said, an evil ring in his voice.

No answer from the detective.

âWeâve got you cornered this time!â

Mr. Hardy did not reply.

âListen, Hardy!â Snattman shouted. âI know youâre up there because you moved that bathrobe. Iâll give you just one minute to come down out of that attic!â

Still no answer and an interval of silence followed.

Then came Snattmanâs voice again. âThis is your last chance, Hardy!â

Nearly a minute went by without a sign from the two enemy camps. Then Snattman moved up the stairs a few more steps.

âHardy, I have a proposition to make to you,â he said presently. âI know you donât want to die and you want those boys of yours to live too. Well, so do I want to live. So letâs call it quits.â

The detective maintained his silence and Snattman continued up the steps. âGive you my word I wonât shoot. And I know you never fire first unless you have to.â

âYou are my hostages!â the smuggler sneered

A moment later he appeared at the top of the stairs, empty-handed except for the light. In a moment he spotted the Hardys with his high-powered flashlight.

âHereâs the propositionâyour lives in exchange for mine and my gangâs.â

âHow do you mean?â Mr. Hardy asked coldly.

âI mean,â the smuggler said, âthat you are my hostages.â

âHostages!â Frank and Joe exclaimed together.

âYes. If my men and I can get our stuff moved away before the police or the Coast Guard might happen in here, then you can leave a little later.â

âBut if they do come?â Frank asked.

âThen Iâll bargain with them,â Snattman answered. âAnd I donât think theyâll turn me down. They donât know where you are, but Iâll make them understand I mean business. If they take me, you three die!â

Frank and Joe gasped. The famous Fenton Hardy and his sons were to be used as a shield to protect a ruthless gang of criminals!

The boys looked at their father in consternation. To their amazement he looked calm, but his mouth was drawn in a tight line.

âIt wonât do you any good to shoot me, Hardy,â the smuggler said. âMallory said all the chambers in that gat are empty but one. If the gang hears a shot, theyâll be up here in a minute to finish you all off properly.â

The Hardys realized that if Snattmanâs remark about the gun were true, they were indeed at the mercy of this cunning, scheming, conniving smuggler. He now started backing toward the stairway.

âI think Iâm a pretty fair guy,â he said with the trace of a satisfied smile.

âAnd one to be hated and feared!â Joe thought in a rage. âWeâve got to outwit this man some-howlâ he determined.

But at the moment the possibility of this looked hopeless.

CHAPTER XVIII

Coast Guard Action

WHILE the Hardy boys had been investigating the smugglersâ hide-out and had been captured, together with their father, Tony and Chet were trying their best to accomplish the errand which Frank and Joe had given them.

During the early part of their trip back to Bayport to contact the Coast Guard, the Napoli had cut through the darkness like a streak. Then suddenly Tony exclaimed, âOh, oh! My starboard light just went out.â

Chet turned to look at the portside. âThis lightâs all right. Must be the bulb in the other one.â

âThatâs what I was afraid of,â said Tony. âIâll bet I havenât another bulb.â

âYou mean, somebody might not see the Napoli and ram us?â Chet asked fearfully.

âWeâll have to be careful,â Tony replied. âChet, take the wheel, will you? Iâll see if I can find an extra bulb.â

Chet changed places with Tony, throttled the motor, and gazed intently ahead. The moon had not yet risen and it was difficult to see very far ahead.

âFind anything?â Chet called out, as Tony finished his round of the lockers and was now rummaging in the last one.

âNot yet.â Tony pulled out a canvas bag, a pair of sneakers, and some fishing tackle. As he reached in for the last article in the locker, he gave a whoop of joy. âHereâs one bulbâjust oneâkeep your fingers crossed, pal. If this isnât any good, weâre in a mess.â

âAnd breaking the law besides,â Chet added.

He held his breath as Tony went forward and crawled inside the prow of the Napoli. With a flashlight, Tony found the protecting shield for the bulb and unfastened it. After removing the dead bulb, he screwed in the new one. As the light flashed on, Tony breathed a sigh of relief and started to crawl out of the prow.

âGood work!â Chet said. âItâs lucky weââ

Chet never finished the sentence. At this instant he saw another speedboat loom up in front of him. Like lightning he swung the wheel around, missing the oncoming craft by inches!

âYou fool!â the driver of the other boat shouted. âWhy donât you look where youâre going?â

Chet did not reply. He was quivering. Besides, he had stalled the motor, which had been throttled so low it had not been able to take the terrific swerving. âOh, now Iâve done it!â the stout boy wailed.

There was no response from Tony for several seconds. He had been thrown violently against the side of the boat and was dazed. But he quickly collected his wits and crawled down beside Chet.

âWhat happened?â he asked.

Chet told him, then said, âYouâd better take over. Iâm a rotten pilot.â

Tony took the seat behind the wheel, started the motor, and sped off toward Barmet Bay.

âWeâve sure wasted a lot of time,â he remarked. âI wonder how Frank and Joe are making out.â

âHope they found Mr. Hardy,â Chet added.

There was no more conversation until the boys turned into the bay. The Coast Guard station for the area was a short distance along the southern shore of the bay and Tony headed the Napoli directly for it. He pulled up at the dock, where two patrol boats and a cutter were tied.

The two boys climbed out and hurried up to the white building. As they were about to enter it, Chet and Tony were amazed to find Biff Hooper and Phil Cohen coming out of it. Jerry Gilroy, another Bayport High friend, was with them.

âWell, for Peteâs sake!â the three cried out, and Biff added, âBoy, are we glad to see you! Where are Frank and Joe?â

âStill hunting for the smugglers,â Chet replied. âWhat brings you here?â

Biff explained that an hour ago Mrs. Hardy had telephoned him to see if he had heard from Frank and Joe. She confessed to being exceedingly worried about her sons. Mrs. Hardy knew they had gone to look for their father and she was in a panic that they had been captured by the same men who were possibly holding her husband.

âI told her Iâd round up a couple of the fellows and go on a hunt,â Biff went on. âJerry thought maybe Frank and Joe had come back to town and were somewhere around. We looked, but we couldnât find them anywhere, so we borrowed Mr. Gilroyâs car and came out here to tell the Coast Guard. Theyâre going to send out boats. Youâd better come in and talk to Chief Warrant Officer Robinson yourself.â

The boys hurried inside. Quickly Chet and Tony told of the Hardysâ suspicion that they had found the entrance to the smugglersâ hide-out.

âCan you send help out there right away?â Chet asked. âWeâll show you where the secret tunnel is.â

âThis is astounding,â said Chief Robinson. âIâll order the Alice out. You can start within five minutes.â

âIâll phone Mrs. Hardy right away,â Jerry offered. âIâm afraid, though, that the news isnât going to make her feel too good.â

While Jerry was gone, Chet told the chief warrant officer that the Hardys thought they knew the names of two of the men who were involved in the smuggling racket. Chet revealed the Hardy suspicions about Snattman being one and Ali Singh the other.

âWe think Ali is a crewman on the Marco Polo thatâs going to dock early tomorrow morning in Bayport,â Chet continued. âFrank and Joe got a tip that makes them think this is the deal: While the ship is offshore, Ali Singh pitches stolen drugs overboard and one of the smugglers picks the package up in a speedboat.â

Robinson raised his eyebrows. âThose Hardy boys certainly take after their father,â he remarked. âThey have the makings of good detectives.â

Biff told the Coast Guard officer of the boysâ adventure at the haunted house on their first visit to the Pollitt place. âFrank and Joe are sure there is some connection between the house and the smugglers.â

âAnd they are probably right,â the chief remarked. âIâll call the State Police at once and tell them the latest developments in this case.â

The boys waited while he made the report. Jerry, who had just finished telephoning Mrs. Hardy, said that she seemed even more worried than before but relieved that the Coast Guard was going to take a hand.

The chief warrant officer then told the boys he would get in touch with the captain of the Marco Polo at once by ship-to-shore telephone. The connection was made and the boys listened with great interest to the conversation. The captain had a booming voice which they could hear plainly.

âYes, I have a sailor named Ali Singh,â he replied in answer to Chief Robinsonâs question. âHeâs a member of the kitchen crew.â

After he had been told that Ali Singh was suspected of stealing drug shipments and dropping them overboard to a confederate, he said, âThat would be pretty easy for him to do. Singh probably throws them out when he dumps garbage into the water, even though heâs not supposed to do it. The drugs could be in an inflated waterproof bag.â

âCaptain, will you have someone keep an eye on this Ali Singh without his knowing heâs being watched?â Chief Robinson requested. âIâll send a patrol boat out from here to watch for any of his gang who may be in a small boat waiting to pick up something he dumps overboard. How far offshore are you?â

âAbout sixteen miles from your headquarters,â was the answer.

âWill you keep in touch with the patrol boat?â Robinson requested. âItâs the Henley, in charge of Chief Petty Officer Brown.â

âIâll do that.â

âAli Singh can be arrested when your ship docks.â

As the conversation was concluded, a uniformed coastguardman came in. He was introduced as Chief Petty Officer Bertram in charge of the Alice, which would follow Tony and Chet to the smugglersâ hide-out.

âIâm ready, sir,â he told his chief, after a short briefing. He turned to the boys. âAll set?â

Chet and Tony nodded. As they turned to follow Bertram, Biff, Phil, and Jerry looked glum.

Noting the expressions on the three boys, Chief Robinson leaned across his desk and said, âI guess you fellows were hoping to be in on this too. How would you like to go on the Henley with Chief Petty Officer Brown and watch the fun?â

The eyes of the three boys lighted up and Phil said, âYou mean it?â

âDo you want a formal invitation?â Chief Robinson asked with a laugh.

He rang for Chief Petty Officer Brown, and after introducing the boys, he explained what the mission of the Henley was to be.

âI understand, sir,â Brown replied. âWeâll leave at once.â

The three boys followed him down to the dock and went aboard. They met the other Coast Guard men and the fast patrol boat set off. It seemed to the boys as if the sixteen miles were covered in an incredibly short time. The lights of the Marco Polo loomed up in the distance.

âSheâs moving very slowly, isnât she?â Biff asked their skipper.

âYes, sheâs making only about four knots.â

âSo it would be easy for a small boat to come alongside and take something from her?â Phil suggested.

âYes, it would.â Quickly the officer picked up a telescope and trained it on the large craft. âThe galley hatches are on the left and the tide is coming in,â he reported. âAnything thrown overboard will float toward shore.â

He ordered the wheelsman to go past the Marco Polo, come down the other side, and approach within three hundred yards, then turn off the engine and lights.

When they reached the designated spot, Petty Officer Brown ordered everyone on board the Henley not to talk or to move around. The Marco Poloâs decks, as well as the water some distance from the craft, was illuminated by light from some of the stateroom portholes. Biff, Phil, and Jerry crowded close to the chief as he trained his powerful binoculars on the galley hatches, so he could give them a running account of anything that might happen. The officer reported little activity aboard the Marco Polo and the boys assumed that the passengers either were asleep or packing their luggage in anticipation of landing the next morning.

Suddenly Petty Officer Brown saw one of the hatches open. A small man, with a swarthy complexion and rather longish coal-black hair, appeared in the circular opening. He looked out, then raised a large pail and dumped its contents into the water. Quickly he closed the hatch.

âAli Singh!â the three boys thought as Brown reported what he had seen.

They watched excitedly to see what would happen now.

Suddenly Biff grabbed Philâs arm and pointed. Vaguely they could see a long pole with a scooping net fastened to the end of it appear from outside the circle of light and fish among the debris. Petty Officer Brown reported that apparently the person holding the pole had found what he wanted, for he scooped something up and the pole vanished from sight.

The boys strained their ears for the sound of a small boat. It did not come and they were puzzled. They also wondered why Petty Officer Brown seemed to be doing nothing about trying to apprehend the person.

The tense skipper suddenly handed the binoculars to Phil. Without a word the puzzled boy looked through them at the spot where Brown had been gazing. To his amazement he could make out the dim shape of a speedboat with two figures in it. Each held an oar and was rowing the small boat away from the Marco Polo as fast as possible.

âWeâve got the smugglers dead to rights!â Petty Officer Brown whispered to the boys.

âArenât you going to arrest them?â Phil asked.

âNot yet,â the officer told him. âIâm afraid we canât do it without some shooting. I donât want to scare the passengers on the Marco Polo. Weâll wait a few minutes.â

Suddenly the engine of the smugglersâ speedboat was started. Tersely, Brown began issuing orders to his men. The motors roared into action.

The chase was on!

CHAPTER XIX

The Chase

IN A few minutes the Henleyâs brilliant searchlight was turned on. It picked up the speedboat which was racing toward shore at full power. But gradually the Coast Guard boat lessened the distance between them.

Chief Petty Officer Brown picked up a megaphone and shouted for the fleeing men to stop. They paid no attention.

âWeâll have to show them we mean business,â the officer told Biff, Phil, and Jerry. âWeâll shoot across their bow.â

He ordered the boys out of the line of fire, in case the smugglers should attempt to retaliate. They obeyed, and though from their shelter the three could not see the speedboat, they listened intently to what was going on.

The Henley plowed ahead and presently the boys heard a shot whistle through the air.

âStop your engine!â Brown commanded. A second later he added, âDrop those guns!â

The smugglers evidently did both, for Skipper Brown said to the boys, âYou fellows can come forward now.â

The three scrambled to his side. Biff was just in time to see one of the two captured men half turn and slyly run his hand into the large pocket of his sports jacket. Biff expected him to pull out a gun and was about to warn Brown when the smuggler withdrew his hand and dropped something into the water.

âThe rare drugs!â Biff thought.

Instantly he began peeling off his clothes, and when the others asked him what he was doing this for, he merely said, âGot an underwater job to do.â

Biff was over the side in a flash and swimming with strong, long strokes to the speedboat. He went beyond it and around to the far side.

In the meantime, Petty Officer Brown had ordered the smugglers to put their hands over their heads. As the Henley came alongside, two of the enlisted coastguardmen jumped across and slipped handcuffs on them. Brown instructed one of the enlisted men to take their prisoners back to Coast Guard headquarters in the smugglersâ boat.

âYou got nothinâ on us! You ainât got no right to arrest us!â one of the captured men cried out.

At that moment Biff Hooperâs head appeared over the side of the speedboat and a moment later he clambered aboard. He called out, âYouâve got plenty on these men! Hereâs the evidence!â

He held up a waterproof bag, tightly sealed. It was transparent and the printing on the contents was easily read. âI happen to know that whatâs in here is a rare drug,â Biff added. âI heard our doctor mention it just a few days ago.â

This announcement took the bravado out of the smugglers. The two men insisted they were only engaged to pilot the speedboat and deliver the drugs. But they would not give the name of the person who had hired them, nor the spot to which they were supposed to go.

âWe know both the answers already,â Petty Officer Brown told the smugglers. Then he said to his wheelsman, âHead for the house on the cliff! They may need a little more help over there.â

Biff was hauled aboard, and as he put his clothes back on, the Henley shot through the water. He whispered to his pals, âWeâll see some more excitement, maybe.â

Some time before this, Chet and Tony had reached the area where the secret tunnel was. The patrol boat which had been following them turned on its great searchlight to pick out the exact spot.

âLook!â Chet cried out.

A speedboat with two men in it had just entered the choppy, rocky waters in front of the tunnel.

âHalt!â Skipper Bertram of the Alice ordered.

The man at the wheel obeyed the command and turned off his motor. But instead of surrendering, he shouted to his companion, âDive, Sneffen!â

Quick as a flash the two smugglers disappeared into the water on the far side of their boat. When they did not reappear, Chet called:

âIâll bet theyâre swimming underwater to the tunnel. Arenât we going after them?â

âWe sure are,â Petty Officer Bertram replied. âTony, can you find the channel which leads to that tunnel?â

âI think so,â Tony answered, eying the smugglersâ speedboat which now, unattended, had been thrown violently by the waves onto some rocks.

âThen weâll come on board your boat,â the chief petty officer stated. He left two of his own men aboard the Alice to guard it and to be ready for any other smugglers who might be arriving at the hide-out.

The rest of the crew, including Bertram himself, climbed aboard the Napoli, and Tony started through the narrow passage between the rocks leading to the tunnel. One of the enlisted men in the prow of the boat operated a portable searchlight. Everyone kept looking for the swimmers, as they went through the tunnel, but did not see them. When the Napoli reached the pond, the man swung his light around the circular shore line.

âThere they are!â Chet cried out.

The two smugglers, dripping wet, had just opened the secret door into the cliff. They darted through and the door closed behind them.

Tony pulled his boat to the ledge in front of the door, turned off the engine, and jumped ashore with the others. To their surprise the door was not locked.

âIâll go first,â Bertram announced.

âBut be careful!â Chet begged. âThere may be a man with a gun on the other side!â

The officer ordered everyone to stand back as he pulled the door open. He beamed the searchlight inside. No one was in sight!

âCome on, men!â the skipper said excitedly.

The group quickly went along the route the Hardys had discovered earlier. When they reached the corridor and saw the three doors, Tony suggested that they look inside to see if the Hardys were prisoners. One by one each room was examined but found to be empty.

The searchers hurried on down the corridor and up the stairway which led to the woodshed of the Pollitt place. They pushed the trap door but it did not open. Their light revealed no hidden springs or catches.

âThe two smugglers that got away from us may have sounded an alarm,â Bertram said. âThey probably set something heavy on top of this trap door to delay us.â

âThen weâll heave it off!â Chet declared.

He and Tony, with two of the enlisted men, put their shoulders to the trap door and heaved with all their might. At last it raised a little, then fell back into place.

âIt isnât nailed shut from the other side at any rate,â Bertram said. âGive it another shove!â

The four beneath it tried once more. Now they all could hear something sliding sideways.

âAll together now!â Chet said, puffing. âOne, two, three!â

The heave that followed did the trick. A heavy object above toppled with a crash, and the trap door opened. As before, Chief Petty Officer Bertram insisted upon being the first one out. There was not a sound from the grounds nor the house and not a light in evidence. He told the others to come up but cautioned:

âThis may be an ambush. Watch your step and if anything starts to pop, you two boys go back down through the trap door.â

Suddenly there was a sound of cars turning into the lane leading to the Pollitt place. The vehiclesâ lights were so bright that Bertram said, âI believe itâs the police!â

A few moments later the cars reached the rear of the old house and state troopers piled out. Chief Petty Officer Bertram hurried forward to introduce himself to Captain Ryder of the State Police. The two held a whispered conversation. From what the boys overheard, they figured that the troopers planned to raid the house.

Just as the men seemed to have reached a decision, everyone was amazed to see a man appear at the rear window of the second-floor hall. He held a gun in his right hand, but with his left he gestured for attention.

âMy nameâs Snattman,â he announced with a theatrical wave of his hand. âBefore you storm this place, I want to talk to you! I know youâve been looking for me and my men a long time. But Iâm not going to let you take me without some people on your side getting killed first!â He paused dramatically.

âCome to the point, Snattman,â Captain Ryder called up to him. He, too, had a gun poised for action should this become necessary.

âI mean,â the smuggler cried out, âthat I got three hostages in this houseâFenton Hardy and his two sons!â

Chet and Tony jumped. The boys had found their father, only to become captives themselves. And now the three were to be used as hostages!

âWhatâs the rest?â Captain Ryder asked acidly.

âThis: If youâll let me and my men go, weâll clear out of here. One will stay behind long enough to tell you where the Hardys are.â Snattman now set his jaw. âBut if you come in and try to take us, itâll be curtains for the Hardys!â

Chetâs and Tonyâs hearts sank. What was going to be the result of this nightmarish dilemma?

In the meantime Frank, Joe, and their father, for the past hour, had despaired of escaping before Snattman might carry out his sinister threat. After the smuggler left the attic, they had heard hammering and suspected the smugglers were nailing bars across the door. The Hardys tiptoed to the foot of the stairway, only to find their fears confirmed.

âIf those bars are made of wood,â Frank whispered, âmaybe we can cut through them with our knives without too much noise.â

âWeâll try,â his father agreed. âJoe, take that knife I got from Malloy.â

As Detective Hardy sat on the steps, leaning weakly against the wall, his two sons got to work. They managed to maneuver the knives through the crack near the knob. Finding the top of the heavy crossbars, the boys began to cut and hack noiselessly. Frankâs knife was already dull and it was not long before Joeâs became so. This greatly hampered their progress.

Half an hour later the boysâ arms were aching so badly that Frank and Joe wondered how they could continue. But the thought that their lives were at stake drove them on. They would rest for two or three minutes, then continue their efforts. Finally Joe finished cutting through one bar and started on the second of the three they had found. Ten minutes later Frank managed to cut through his.

âNow we can take turns,â he told his brother.

Working this way, with rest periods in between, the boys found the task less arduous.

âWeâre almost free!â Joe finally said hopefully.

Just then, the Hardys heard cars coming into the driveway. They were sure that the police had arrived because of the illumination flooding the place even to the crack under the attic door.

It was less than a minute later that they heard the cars come to a stop outside and then Snattmanâs voice bargaining for his own life in exchange for his hostages!

âLetâs break this door down and take our chances,â Frank whispered hoarsely.

âNo!â his father said. âSnattman and his men would certainly shoot us!â

At this instant Frank gave a low cry of glee. His knife had just hacked through the last wooden bar. Turning the knob, he opened the door and the three Hardys stole silently from their prison.

From the bedroom doorway they peered out to where Snattman was still trying to bargain with the police. No one else was around. The boys and their father looked at one another, telegraphing a common thought.

They would rush the king of the smugglers and overpower him!

CHAPTER XX

The Smugglerâs Request

As THE three Hardys crept forward, hoping to overpower Snattman before he saw them, they heard a voice outside the house say, âYouâll never get away with this, Snattman! You may as well give up without any shooting!â

âIâll never give up!â

âThe house is surrounded with troopers and Coast Guard men!â

âWhat do I care?â Snattman shouted, waving his arms out the window. âI got three hostages here, and Iâve got one of the Coast Guard.â

âHeâs in the house too?â

Snattman laughed. âTrying to catch me, eh? Well, Iâm not going to answer that question.â

There was silence outside the house. This seemed to worry the man. He cried out, âIt wonât do you any good to talk things over! I got you where I want you andââ

Like three stalking panthers Frank, Joe, and their father pounced upon the unwary smuggler. Mr. Hardy knocked the manâs gun from his hand. It flew out the window and thudded to the ground below. The boys pinned his arms back and buckled in his knees.

From below came a whoop of joy. âThe Hardys have captured Snattmanlâ The voice was Chet Mortonâs.

âMy men will never let you in herelâ the victim screamed. He snarled, twisted, and turned in his captorsâ grip.

Mr. Hardy, fearful that Snattman would shout to order his men upstairs, clamped a hand over the smugglerâs mouth. By this time there was terrific confusion inside and outside the Pollitt place. State troopers and the Coast Guard men had burst into both the front and rear doors.

Others guarded the sides of the house to prevent any escape from the windows. A few shots were fired, but soon the smuggling gang gave up without fighting further. The capture of their leader and the sudden attack had unnerved them.

The Hardys waited upstairs with their prisoner. In a few moments Chet and Tony appeared and behind them, to the utter astonishment of Frank and Joe, were Biff, Phil, and Jerry.

Stories were quickly exchanged and Mr. Hardy praised Frankâs and Joeâs chums for their efforts. All this time Snattman glowered maliciously.

In a few moments chief petty officers Bertram and Brown appeared in the second-floor hall with Captain Ryder. Immediately the state trooper fastened handcuffs onto the prisoner. He was about to take him away when Frank spoke up:

âThereâs someone else involved in this smuggling who hasnât been captured yet.â

âYou mean the man who got away from here in the truck?â Officer Ryder asked. âWeâve set up a roadblock for him and expect to capture him any minute.â

Frank shook his head. âAli Singh, the crewman on the Marco Polo, has a friend who owns a small cargo ship. Right now, itâs lying somewhere offshore. Snattman was thinking of putting my dad, Joe, and me on it and arranging things so that we never got home again.â

The king of the smugglers, who had been silent for several minutes, now cried out, âYouâre crazy! Thereâs not a word of truth in it! There isnât any boat offshore!â

The others ignored the man. As soon as he stopped yelling, Joe took up the story. âI have a hunch youâll find that your Coast Guard man is a prisoner on that cargo ship. The name of the captain is Foster.â

âYou mean our man Ayres is on that ship?â Petty Officer Brown asked unbelievingly.

âWe donât know anyone named Ayres,â Frank began. He stopped short and looked at his brother. They nodded significantly at each other, then Frank asked, âDoes Ayres go under the name of Jones?â

âHe might, if he were cornered. You see, heâs sort of a counterspy for the Coast Guard. He pretended to join the smugglers and we havenât heard from him since Saturday.â

âI found out about him,â Snattman bragged. âThat name Jones didnât fool us. I saw him make a sneak trip to your patrol boat.â

Frank and Joe decided this was the scene they had seen through the telescope. They told about their rescue of âJonesâ after a hand grenade had nearly killed him. They also gave an account of how his kidnapers had come to the Kane farmhouse, bound up the farmer and his wife, and taken âJones.â

Skipper Brown said he would send a patrol boat out to investigate the waters in the area and try to find Captain Fosterâs ship.

âWeâll wait here for you,â Captain Ryder stated. âThis case seems to be one for both our branches of service. Two kidnapings on land and a theft from the Marco Polo, as well as an undeclared vessel offshore.â

While he was gone, the Hardys attempted to question Snattman. He refused to admit any guilt in connection with smuggling operations or the shipment of stolen goods from one state to another. Frank decided to talk to him along different lines, hoping that the smuggler would inadvertently confess something he did not intend to.

âI heard you inherited this house from your uncle, Mr. Pollitt,â Frank began.

âThatâs right. Whatâs it to you?â

Frank was unruffled. âI was curious about the tunnel and the stairways and the cave,â he said pleasantly. âDid your uncle build them?â

Snattman dropped his sullen attitude. âNo, he didnât,â the smuggler answered. âMy uncle found them all by accident. He started digging through his cellar wall to enlarge the place, and broke right through to that corridor.â

âI see,â said Frank. âHave you any idea who did build it?â

Snattman said that his uncle had come to the conclusion that the tunnel and pond had been discovered by pirates long, long ago. They apparently had decided it would be an ideal hide-out and had built the steps all the way to the top of the ground.

âOf course the woodshed wasnât there then,â Snattman explained. âAt least not the one thatâs here now. The trap door was, though, but there was a tumble-down building over it.â

âHow about the corridor? Was it the same size when your uncle found it?â

âYes,â the smuggler answered. âMy uncle figured that was living quarters for the pirates when they werenât on their ship.â

âPretty fascinating story,â Tony Prito spoke up.

Several seconds of silence followed. Snattmanâs eyes darted from one boy to another. Finally they fastened on Frank Hardy and he said:

âNow that Iâm going to prison, the eyepieces to your telescope, and your motorcycle tools, wonât do me any good. Youâll find them in a drawer in the kitchen.â

âThanks a lot,â said Frank.

There was another short silence. Then the smuggler went on, his head down and his eyes almost closed, âMr. Hardy, I envy you. And IâI never thought Iâd be making this kind of a confession. You know almost everything about what Iâve been doing. Iâll tell the whole story later. Since theyâre going to find that Coast Guard officer, Ayres, on Fosterâs ship thereâs no use in my holding out any longer.

âI said I envy you, Mr. Hardy. Itâs because you brought up two such fine boys and they got swell friends. MeâI wasnât so lucky. My father died when I was little. I was pretty headstrong and my mother couldnât manage me. I began to make the wrong kind of friends and after thatâyou know how it is.

âMy uncle, who owned this place, might have helped me, but he was mean and selfish and never gave us any money. The most he would do was invite my mother and me here once in a while for a short visit. I hated him because he made my mother work very hard around the house all the time we were here. It wasnât any vacation for her.

âOne of the times when I was here my uncle showed me the piratesâ hide-out and I never forgot it. After I got in with a gang of hoods I kept thinking about this place, and what a swell hide-out it would be for smugglers. I was afraid to try it while my uncle was alive. But when I heard he was dead, I thought that was my chance.

âYou see, I didnât dare go to claim the property as the rightful heir. But now Iâm planning to take it over. Of course it wonât do me any good, because I know Iâll have to do a long stretch in the pen. But Iâm going to ask those executors to use my uncleâs money to run this place as a boysâ homeâI mean a place where boys without proper home training can come to live.â

The group listening to Snattman, king of the smugglers, were too overwhelmed by his complete change of heart to say anything for a few seconds. But when the man looked up, as if pleading for his hearers to believe him, Mr. Hardy said, âThatâs a very fine thing for you to do, Snattman. Iâm sure that the boys who benefit from living here will always be grateful to you.â

The solemn scene was suddenly interrupted by the return of Chief Petty Officer Brown. He reported that another patrol boat had picked up his message about Captain Fosterâs ship and within a few minutes had reported sighting it. Then, within a quarter of an hour, word came that Captain Foster had been put under arrest, and that the missing Coast Guard man had been found on the ship, as well as a quantity of merchandise which the captain had expected Snattman to remove.

The prisoners were now taken away from the Pollitt home and the Hardys and their friends found themselves alone.

Chet asked suddenly, âHow do we get home?â

Tony grinned. âI guess the Napoli will hold all of us.â

The group went to the woodshed, opened the trap door, and started down the secret passageway to the pond below. They climbed into the Napoli and Tony slipped behind the wheel. The Coast Guard men thoughtfully had left the portable searchlight on the prow and Tony was able to make the trip through the tunnel and the narrow channel out to the ocean without accident.

Suddenly Frank spoke up, âDad, what happened to your car?â

Mr. Hardy smiled. âItâs in Bayport in a garage. I was being followed, so I shook off the shadowers and took the bus.â He added ruefully, âBut it didnât do me much good. Snattmanâs men attacked me and took me prisoner on the road.â

The famous detective now said, âWhile I have the chance, I want to thank each of you boys individually for what you did. Without the seven of you, this case might never have been solved and I might not have been found alive.â

Modestly Frank and Joe and their friends acknowledged the praise, secretly hoping another mystery would come their way soon. One did and by learning The Secret of the Old Mill the Hardy boys encountered a cunning gang of counterfeiters.

Suddenly Joe remarked, âCompliments are flying around here pretty thick, but thereâs one person we forgot to mention. Without him, Frank and I might never have found Dad.â

âWhoâs that?â Biff asked.

âPretzel Pete!â Joe replied.

âThatâs right,â said Frank. âAll together, fellows! A rousing cheer for Pretzel Pete!â

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