Hardy Boys 19: The Disappearing Floor
Hardy Boys 19: The Disappearing Floor

Author: Franklin W. Dixon

Publisher: Penguin

Published: 1940-05-01

Total Pages: 193

ISBN-13: 110107633X

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Once again Frank and Joe Hardy take on a puzzling case when their famous detective father asks the boys to assist him in tracking down a notorious jewel thief and his accomplices. The trail leads to the outskirts of the Hardys’ home town and to a weirdly guarded mansion on the old Perth estate. With their pal Chet Morton, the brothers must tackle the mystery of the mansion heir’s sudden death. A disappearing floor, a huge, savage-looking, hound, a galloping ghost, and a college professor’s startling invention are just a few of the strange elements that complicate the boys’ efforts to solve both mysteries.

The Disappearing Floor
The Disappearing Floor

Author: Franklin W. Dixon

Publisher: Grosset & Dunlap

Published: 1964-06-01

Total Pages: 176

ISBN-13: 9780448189192

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The Hardy boys become involved in two mysteries when they attempt to track down a jewel thief and solve the intrigue surrounding an old estate

Hardy Boys 52: the Shattered Helmet
Hardy Boys 52: the Shattered Helmet

Author: Franklin W. Dixon

Publisher: Penguin

Published: 1973-01-01

Total Pages: 193

ISBN-13: 0448089521

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Danger is the name of the game when the Hardys agree to help their pen pal from Greece, Evan Pandropolos, search for a priceless, ancient Greek helmet. Years ago, Evan’s uncle had loaned it to Hollywood movie company for use in a silent motion picture, but the treasured helmet had been lost. Picking up foes along the way, the young detectives unearth clues that keep them constantly on the move—from their Greek college campus to California and finally to Greece.

Hardy Boys 58: The Sting of the Scorpion
Hardy Boys 58: The Sting of the Scorpion

Author: Franklin W. Dixon

Publisher: Penguin

Published: 1978-06-01

Total Pages: 193

ISBN-13: 1101076674

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During Mr. Hardy’s investigation of a ruthless gang of terrorists, Frank and Joe witness an explosion in the sky near an airborne dirigible owned by Quinn Air Fleet. The young detectives look into a clue that takes them into a new animal park outside Bayport, where they are lured into a trap by an unknown enemy. Problems arise for the park owner as he receives pressure from a competitor and a real-estate firm to sell out. Strange occurrences at the park also frighten the visitors and animals. Frank and Joe take up the case despite fore warnings.

Hardy Boys 18: The Twisted Claw
Hardy Boys 18: The Twisted Claw

Author: Franklin W. Dixon

Publisher: Penguin

Published: 1939-03-01

Total Pages: 193

ISBN-13: 1101076321

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A series of museum thefts launch the Hardy Boys on this baffling mystery. Rare collections of ancient pirate treasure are being stolen, so Frank and Joe are asked to stake out the Black Parrot, a suspicious freighter docked in Bayport Harbor. This whirlwind chase after a self-styled pirate king in the Caribbean stronghold of the Empire of the Twisted Claw makes a gripping tale of suspense and high adventure.

Hardy Boys 01: the Tower Treasure
Hardy Boys 01: the Tower Treasure

Author: Franklin W. Dixon

Publisher: Penguin

Published: 1927-06-01

Total Pages: 196

ISBN-13: 9780448089010

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A dying criminal confesses that his loot has been stored "in the tower." Both towers of the looted mansion are searched in vain. It remains for the Hardy boys to make an astonishing discovery that clears up the mystery and clears the name of a friend’s father.

Hardy Boys 09: The Great Airport Mystery
Hardy Boys 09: The Great Airport Mystery

Author: Franklin W. Dixon

Publisher: Penguin

Published: 1930-05-01

Total Pages: 193

ISBN-13: 1101076240

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Valuable electronic parts containing platinum are being stolen from shipments made by Stanwide Mining Equipment’s cargo planes, and Frank and Joe are called upon to assist their world-renowned detective father solve the baffling case. While posing as Stanwide employees, the boys look into the truth behind the chief pilot’s death at sea. The puzzling trail of clues leads the young sleuths to an uninhabited Caribbean island, but the final, and most startling, discovery is made in the boys’ home town of Bayport.

Hardy Boys Mystery Stories 1-2
Hardy Boys Mystery Stories 1-2

Author: Franklin W. Dixon

Publisher: Penguin

Published: 1987-09-02

Total Pages: 385

ISBN-13: 0448089645

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Together in this one book are two of the Hardy Boys’ oldest mysteries that began the classic mystery series of the sleuthing siblings. In The Tower Treasure, the Hardy boys' summer is ruined by a red-haired robber striking all over town. No robbery is more devastating than of Tower Mansion, home to one of the wealthiest families around. To prove the mansion’s caretaker is innocent, the Hardy boys will have to solve the mystery of the stolen jewels before time runs out. In The House on the Cliff, Frank and Joe are asked to help out their famous private detective father on his latest drug smuggling case, which sends them to an old house on a cliff to serve as lookouts. But when cries for help lure the boys inside the house, they realize they could be in more danger than they thought.

Hardy Boys 23: The Melted Coins
Hardy Boys 23: The Melted Coins

Author: Franklin W. Dixon

Publisher: Penguin

Published: 1944-02-01

Total Pages: 193

ISBN-13: 1101076372

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Frank and Joe Hardy suspect that their best friend Chet Morton is the victim of a summer school swindle and offer to help get his money back. While probing a baffling burglary at the Seneca Indian Reservation in New York State they investigate Zoar College located nearby. A startling connection between the Zoar College swindle and the theft of the Seneca’s gold tribal relic Spoon Mouth propels the teenage sleuths into a series of perplexing and dangerous situations.

Hardy Boys 14: The Hidden Harbor Mystery
Hardy Boys 14: The Hidden Harbor Mystery

Author: Franklin W. Dixon

Publisher: Penguin

Published: 1935-06-01

Total Pages: 190

ISBN-13: 1101076283

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The boys once again have jumped into the thick of a complicated mystery. Samuel Blacksone and his brother Ruel Rand live on adjacent properties, and it appears that one of them is out to hurt the other because they are both attacked. Frank and Joe soon learn that treasure is rumored to be hidden between the two properties, and as they investigate, they learn that others are involved in the apparent plot between the two brothers. Spooky mansions, secret passages and rooms, mysterious characters, and a monster provide an enjoyable atmosphere to this Hardy Boys mystery.