Books like The Masked Monkey by Franklin W. Dixon
Frank and Joe Hardy are drawn into a mystery when they must locate Graham Retson, the son of a wealthy industrialist who has vanished under suspicious circumstances. Questions arise: did Retson flee because of family tensions, or was he kidnapped? As the brothers pursue the truth, the investigation expands into a dangerous adventure in South America. Their quest pits them against a fierce monkey trained as a killer, man‑eating piranhas, a ruthless gang of passport thieves, and a sophisticated identity‑changing mill for criminals. Only through determination and bravery can the Hardys untangle the complex plot and resolve one of their toughest cases.
First publish date: 1972
Genre: Children's Fiction/Children's Adventure
Authors: Franklin W. Dixon
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Books similar to The Masked Monkey (28 similar books)
When a dying criminal reveals that his loot is hidden in a mansion tower, the Hardy Boys race to find it—only to discover a clue that lifts the blame from a friend’s father.
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Frank and Joe Hardy chase a stolen stuffed animal collection, uncover coded messages from industrial spies, and race to the edge of Canada to solve a mystery that blends auction theft with espionage.
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Teen detective brothers Frank and Joe Hardy tackle a counterfeiting mystery in this Hardy Boys chapter.
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When a brilliant professor disappears, the Hardy Boys investigate on a college campus and in the Honeycomb Caves, uncovering a secret that ties a local radar station sabotage to a mysterious hermit.
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Frank and Joe Hardy race against a ruthless espionage ring to protect a top‑secret space instrument, uncovering clues from a South American stowaway, mysterious footprints, and a dictator’s island stronghold.
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The Hardy Boys investigate a string of strange incidents in their town, uncovering a plot involving robbers and kidnappers that threatens their friends.
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Frank and Joe Hardy investigate a string of racing accidents linked to mysterious danger signposts, uncovering a plot to steal an experimental motor and a kidnapped racehorse on the track.
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The Hardy Boys, Frank and Joe, tackle another mystery in "What Happened at Midnight," part of Franklin W. Dixon’s popular juvenile detective series.
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Frank and Joe Hardy investigate a theft of platinum electronic parts from Stanwide Mining Equipment Company's cargo planes, uncovering a smuggling ring, a mysterious plane crash, and a thrilling showdown that culminates in their hometown of Bayport.
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Frank and Joe Hardy investigate the mystery of a sunken golden Pharaoh head, encountering an ancient pirate ghost, insurance intrigue, and a deadly explosion on Whalebone Island.
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Frank and Joe Hardy investigate a mysterious estate, uncovering a dead owner's secret key, a deserted mansion without locks, and a criminal ring targeting electronics warehouses, linking the two cases into a suspenseful mystery.
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The Hardy Boys investigate museum thefts of ancient pirate treasure, board a suspicious freighter, and chase a self‑styled pirate king to a Caribbean stronghold.
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The Hardy Boys race across the deep South to clear a disgraced Confederate general’s name and uncover hidden Civil War gold, evading criminals, booby‑traps, and dangerous bullets in this tense mystery adventure.
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The Hardy Boys join eccentric Thaddeus McClintock on a sea voyage that turns into a high‑stakes mystery involving a phantom freighter, smugglers, and counterfeit documents.
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In the 1935 Hardy Boys adventure, the brothers travel south to settle a local feud, employing their detective skills to unmask the truth.
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The Hardy Boys acquire a Chinese junk, the Hai Hau, to ferry passengers and uncover a hidden treasure, drawing the attention of rival seekers and a private detective, all while the boys navigate mystery and adventure in Rocky Isle.
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Detective kids Hardy Boys uncover a secret cloning scheme and must protect a covert government agency from rogue scientists.
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A thrilling Halloween mystery contest threatens to turn into a real fright when the Hardys must keep the prizes fair amid spooky suspects and a chase through the local parade.
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Frank and Joe travel to Florida to investigate the sabotage of a satellite launch, only to uncover a theft ring that involves sea animals and threatens the mission.
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Frank and Joe Hardy travel from the West Coast to England, turning a mystical mystery into a deadly adventure, as they chase a stolen "Witchmaster's Key" through East Anglia, Ireland, and the Isle of Man.
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The Hardy Boys travel from a film‑making course at Hunter College to California and Corfu as they chase a priceless ancient Greek helmet, facing gangsters and intrigue along the way.
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On Christmas, the Hardy Boys are invited to Cabin Island for a holiday, but a mysterious stranger stops them. Within a day, they investigate the disappearance of Johnny Jefferson and the theft of antique medals, facing snowbound danger and a ghostly prowler.
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When a sky‑bound explosion shocks Bayport, Hardy Boys Frank and Joe investigate a sinister gang, a conflicted animal park owner, and a mysterious island, uncovering threats that test their detective skills and courage.
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Frank and Joe Hardy investigate a carnival robbery, a pawnshop mystery, and an ivory idol theft, following clues that lead them from New York’s seaport to Los Angeles while confronting pirates marked by a three‑part whale tattoo.
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The Hardy Boys investigate a mysterious, science‑defying tornado in Oklahoma, uncovering a criminal scheme that forces them to confront the raw power of natural disaster.
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Some Other Similar Books
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