After a dying criminal confesses that his loot has been stashed "in the tower," the Hardy boys make an astonishing discovery.
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181 kirjaa tekijältä Franklin W. Dixon
When Mr. Hardy disappears while investigating a mystery surrounding a vacant house rumored to be either haunted or an abode for criminals, the Hardy Boys search for the truth.
A counterfeiting case leads Frank and Joe Hardy into an investigation of an old mill, constructed by the pioneers
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.
Timber wolves, a Rocky Mountain blizzard, and a mine cave-in are only a few of the perils Frank and Joe Hardy encounter during their search for the principal members of a notorious gang responsible for a payroll robbery. Clue by clue, Frank and Joe cleverly fit into place the scattered pieces of this dangerous puzzle and come up with the astonishing solution.
When the Hardy Boys eagerly agree to assist their friend Jack Dodd and his father in locating a family treasure, the two young detectives are unaware of the baffling complications that will arise. Deadly road traps, aerial ambush, a spider man and a suspect who carries a menacing cane harass the young detectives as they seek the triple solution to this perplexing and exciting mystery.
When the Hardy boys reached the caves, they came unexpectedly upon a queer old hermit.
Joe, Frank, and their friends search the icebound Cabin Island for a missing boy and some stolen medals
Frank and Joe Hardy's efforts to retrieve a top-secret invention from a scientist's house in Bayport leads them to a mystery involving a dangerous gang of jewel thieves and smugglers
A clock in a vacant house provides a clue to the whereabouts of a gang of harbor thieves
A plot to steal a top-secret instrument vital to the United States space program poses a challenging case for Frank and Joe Hardy. After rescuing a South American stowaway who mutters a warning about "Footprints " and then vanishes, Frank and Joe discover that documents belonging to their famous detective father are missing and that footprints linger under a window. The young detective's search for the diabolical mastermind of the "Footprints" spy ring takes them on a flight to a group of islands off the coast of South America.
In this book, originally published in 1934, the search for a stolen boat leads the Hardy Boys to Mexico where they become involved with a band of Indians and a strange smuggling operation.
Hardy Boys 20: Mystery of the Flying Express
Franklin W. Dixon
Grosset Dunlap Inc.,U.S.
1941
sidottu
After the new hydrofoil they are guarding is stolen, the Hardy boys face frequent danger in solving a mystery involving criminals who operate by signs of the zodiac.
While searching for the guard end of a broken saber that will solve one mystery, the Hardy brothers become involved with a gang of bank robbers.