Franklin W Dixon

Fenton Hardy, the famous private detective and father of the Hardy Boys, asks his sons to help him with his latest case involving the illegal drug trade. Hardy sends Frank and Joe to a house on the cliff, whose location offers an excellent vantage point to watch for smugglers. The Hardy Boys are tricked into going inside the house by cries for help and find themselves trapped for a short time in the attic, meanwhile, their telescope and motorcycles...

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. In the old Montana mining camp of Lucky Lode, the young detectives puzzle over a series of mysterious events. A piano-playing ghost haunts the long-abandoned dance hall. Eerie blue lights flash from the hilltop cemetery in the dark...

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,...

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.

Frank and Joe race against time to retrieve a scientist’s top-secret invention before thieves get their hands on it. But the young detectives soon discover that they are involved in a mystery far greater in scope than just safeguarding the invention. When Joe is kidnapped, this incident starts Frank of on a chase that could end disastrously for him and his pals.

Joe and Frank's winter break skiing holiday turns to horror when a series of deadly mishaps threaten their resort.

A criminal that seems to be straight out of a Sherlock Holmes novel is out to get brother detectives Frank and Joe in the sixteenth book in the thrilling Hardy Boys Adventures series.
An original Sherlock Holmes manuscript was stolen from the Bayport Museum and now pages keep showing up in Frank and Joe's things: their lockers, menus, even the backseat of their car. It's clear someone is out to frame them. But who could it be?
The boys

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A reenactment leads to the death of Bayport's biggest benefactor, and the Hardy Boys get involved, especially when a favorite teacher turns out to be a prime suspect.

"Brother detectives Frank and Joe dive deep into the Florida Keys to find a missing person in the twenty-first book in the thrilling Hardy Boys Adventures series"--

Brother detectives Frank and Joe face perils in the wilderness as they try to track down their missing teacher in this thrilling Hardy Boys adventure.   As part of a research unit, Bayport High's Green Environment Conservation Club (GECO) is taking a field trip-camping on nearby Black Bear Mountain, where the students will help field biologist Dr. Max Kroopnik investigate local flora. Frank's there to geek out about nature while Joe's along for the...