Hardy Boys 43: The Mystery of the Aztec Warrior
Hardy Boys 43: The Mystery of the Aztec Warrior

Author: Franklin W. Dixon

Publisher: Penguin

Published: 1964-02-01

Total Pages: 193

ISBN-13: 1101076569

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The handwritten will of a deceased world-traveler is strange and mysterious. Its cryptic instructions are to deliver “the valuable Aztec warrior to the rightful owner, a descendant of an Aztec warrior.” Frank and Joe Hardy have only one slim clue to work with: the name of a complete stranger who can help. Despite the harassments, the threats, and the attacks made upon them, Frank and Joe unravel clue after clue in their adventure-packed search for the living descendant of the mighty Aztec nation which once ruled in Mexico. It takes as much high courage as clever deduction for the young detectives to defeat their ruthless foes and to decipher the fascinating secrets of the strange and mysterious will.

Hardy Boys 30: The Wailing Siren Mystery
Hardy Boys 30: The Wailing Siren Mystery

Author: Franklin W. Dixon

Publisher: Penguin

Published: 1951-01-01

Total Pages: 193

ISBN-13: 1101076445

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Caught in their motorboat the Sleuth by a sudden storm at sea, Frank and Joe Hardy are relieved to see the lights of a yacht. But their SOS ignored. The shrill sound of a siren fills the night air and moments later a helicopter drops an object alongside the Sleuth: a wallet containing two thousand dollars! The next day, a truck carrying a shipment of high-powered rifles has been stolen. These two apparently unconnected events are clues in a tangle of mystery which turns out to be one of the detective brothers’ most exciting adventures.

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.

Hardy Boys 45: The Mystery of the Spiral Bridge
Hardy Boys 45: The Mystery of the Spiral Bridge

Author: Franklin W. Dixon

Publisher: Penguin

Published: 1965-12-01

Total Pages: 193

ISBN-13: 1101076585

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Frank and Joe Hardy are determined to bring to justice the vicious criminals who kidnapped their detective father while he was investigation sabotage of a road-building project in the Kentucky wilderness. After Mr. Hardy’s escape, the two young sleuths are spurred into action when he mumbles the word “Felix” and they discover a dossier of a notorious ex-convict was stolen from his files. The trail leads them to New York City but ends abruptly in a cemetery! With the new clue of a spiral symbol the boys head to Kentucky as part of a highway construction crew to track down the kidnappers and saboteurs.

Hardy Boys 64: Mystery of Smugglers Cove
Hardy Boys 64: Mystery of Smugglers Cove

Author: Franklin W. Dixon

Publisher: Penguin

Published: 2005-04-21

Total Pages: 130

ISBN-13: 1101076739

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A painting is stolen, and the Hardy Boys are suspects. Determined to find the artwork, the young detectives fly to Florida, where they disguise themselves and join a group of sinister smugglers. Though the painting fails to appear, an important clue sends the boys on a perilous trek through the Everglades. Threatened at every turn by greedy enemies, the Hardys fight a tricky and powerful battle to expose the truth.

Hardy Boys 40: Mystery of the Desert Giant
Hardy Boys 40: Mystery of the Desert Giant

Author: Franklin W. Dixon

Publisher: Penguin

Published: 1960-12-01

Total Pages: 192

ISBN-13: 1101076534

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In a search for the missing Willard Grafton, Frank Hardy and younger brother Joe, encounter a gang of criminals intent on defrauding the US government, and are lead across California and even into Mexico.

Hardy Boys 66: The Vanishing Thieves
Hardy Boys 66: The Vanishing Thieves

Author: Franklin W. Dixon

Publisher: Penguin

Published: 2005-04-21

Total Pages: 129

ISBN-13: 1101076755

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Chet Morton's cousin, Vern, is on his way to California to find a rare and valuable coin mysteriously missing from his uncle's bank vault. When he stops in Bayport, his brand-new car is stolen. The Hardys take on a double mystery-and double danger as they head for the West Coast to investigate this sinister mystery.

Hardy Boys 07: The Secret of the Caves
Hardy Boys 07: The Secret of the Caves

Author: Franklin W. Dixon

Publisher: Penguin

Published: 1929-05-01

Total Pages: 193

ISBN-13: 1101076224

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Triggered by the disappearance of a brilliant young professor, this mystery takes the Hardy boys first to Kenworthy College, where they find a puzzling message on an examination paper. But then, a new clue is unearthed that sends the young detectives to the Honeycomb Caves. After many dangerous encounters, Frank and Joe discover a powerful searchlight in one of the craggy caverns along the seacoast. In the brilliant white glare of the searchlight, the startling secret of the caves is dramatically revealed.

Hardy Boys 11: While the Clock Ticked
Hardy Boys 11: While the Clock Ticked

Author: Franklin W. Dixon

Publisher: Penguin

Published: 1932-01-01

Total Pages: 190

ISBN-13: 1101076267

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A banker who has been receiving threatening notes enlists the help of the Hardy boys. Before long, the young sleuths find themselves entangled in the investigation of a notorious band of thieves.

Hardy Boys 55: The Witchmaster's Key
Hardy Boys 55: The Witchmaster's Key

Author: Franklin W. Dixon

Publisher: Penguin

Published: 1975-12-01

Total Pages: 193

ISBN-13: 1101657324

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There is not time for explanations when Mr. hardy telephones Frank and Joe form the West Coast and sends them flying off to England to help his old friend Professor Rowbotham. Their stay in East Anglia begins with a weird omen, as they witness the bizarre funeral of an old witchmaster. From then on, strange things happen. When the Hardys learn about the strange disappearance of Lord Craighead, the plot deepens. Danger follows them to Ireland as Frank and Joe survive a shipwreck and find a clue from a frightened white which that leads to the torture chamber of a black witches’ coven, all in search of the telltale Witchmaster’s Key.