Hardy Boys 46: The Secret Agent on Flight 101
Hardy Boys 46: The Secret Agent on Flight 101

Author: Franklin W. Dixon

Publisher: Penguin

Published: 1967-01-01

Total Pages: 193

ISBN-13: 1101076593

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Rarely do magicians reveal their professional secrets. Consequently Frank and Joe Hardy are amazed when a well-known magician, the Incredible Hexton, offers to reveal the secret of his “Vanishing Man Act” and invited Mr. Hardy to be the subject. When their detective father fails to reappear, his sons are convinced that something sinister is afoot, despite Hexton’s insistence that Mr. Hardy is playing a joke on them. While desperately searching for their father, Frank and Joe find themselves working with SKOOL, a U.S. organization of secret agents pitted against UGLI, an international ring of spies stealing government secrets domestically and internationally. The young detective’s gripping adventures culminate in a dramatic climax when they unmask the secret agent on Flight 101.

Hardy Boys 20: Mystery of the Flying Express
Hardy Boys 20: Mystery of the Flying Express

Author: Franklin W. Dixon

Publisher: Penguin

Published: 1941-01-01

Total Pages: 193

ISBN-13: 1101076348

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A sleek new hydrofoil is scheduled to start ferrying passengers between Bayport and Cape Cutlass. But business enemies of the hydrofoil owner have stirred up a hornets’ nest of violent opposition among small boat owners. Fearing sabotage, he begs Frank and Joe Hardy to guard the Flying Express on her maiden trip. Startling developments plunge the teenage detectives into a dangerous chase by sea, air, and land in pursuit of a gang of hardened criminals who operate by the signs of the Zodiac. Tension mounts when the Flying Express vanishes – and so does Sam Radley, Mr. Hardy’s skilled operative. Peril stalks Frank and Joe’s every moves as they hunt down the terrifying gangleader Zodiac Zig and his vicious henchmen.

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: 1101657308

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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 04: the Missing Chums
Hardy Boys 04: the Missing Chums

Author: Franklin W. Dixon

Publisher: Penguin

Published: 1930-03-01

Total Pages: 193

ISBN-13: 0448089041

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Not only is the local bank robbed, but two of the Hardy boys' pals mysteriously disappear after a masquerade party. Are the events related? How the Hardy boys use all their courage and skill to outwit the criminals provides an exciting climax to one of the most baffling mysteries the young detectives have ever encountered.

Hardy Boys 44: The Haunted Fort
Hardy Boys 44: The Haunted Fort

Author: Franklin W. Dixon

Publisher: Penguin

Published: 1964-12-01

Total Pages: 193

ISBN-13: 1101076577

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A long-distance telephone call from Chet Morton’s uncle summons Frank and Joe Hardy and their staunch pal Chet to a summer art school, located near old Fort Senandaga which is reputed to be inhabited by a ghost. The young detectives’ assignment: recover two famous oil paintings stolen from the valuable Prisoner-Painter collection owned by Jefferson Davenport. Mr. Davenport reveals that one of the famous pictures contains a clue to the hiding place of a priceless gold chain. Vicious threats and deadly traps beset Frank, Joe, and Chet as they search for clues to the stolen paintings and the gold treasure – a search that is complicated by the stormy feud between an Englishman and a Frenchman over the military history of the ancient fort.

Hardy Boys 32: The Crisscross Shadow
Hardy Boys 32: The Crisscross Shadow

Author: Franklin W. Dixon

Publisher: Penguin

Published: 1953-01-01

Total Pages: 189

ISBN-13: 1101076461

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When a man selling leather goods door-to-door steals the key to their detective father’s file cabinet, Frank and Joe Hardy set out to track him down. An odd mark on a key case which the man sold to their mother leads the teenage sleuths to an Indian village, whose chiefs begs them to help him find valuable tribal possessions and the deed for his land. How Frank and Joe find the missing deed and Ramapan treasures, how they prevent the phony leather-goods salesman from carrying out a ruthless scheme and how they help their father solve the top-secret case he is working on for the U.S. government makes exciting reading for all fans of the Hardy boys.

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.