Franklin W Dixon

Helping in a case their father is working on, the Hardy boys try to find an informer who has telephoned from a booth in their home town, and are hired by a carnival owner to spot pickpockets.

While searching in Iceland for a missing sailor sought by an insurance company, the teen-age detective brothers uncover a plot threatening the life of a United States astronaut and the secrets of NASA's moon project.

The Hardy boys try to find out who is behind a rash of automobile thefts that are occurring on Shore Road just outside of Bayport.

The Hardy boys and two friends take a camping trip to the Rocky Mountains in an attempt to locate a gang of credit-card counterfeiters.

Joe and Frank continue to participate in the reality television show "Deprivation House," since although the culprit responsible for the initial wave of crimes has been caught, someone on the show still harbors an intent to kill.

Frank and Joe investigate the disappearance of eight children from Misty Falls State Park in Idaho over the last twelve years after one of the missing children reappears with no memory of anything that happened previously.

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.

The Hardy brothers interrupt their investigations of jewelry-store holdups to answer a plea from their cousin on a New Mexico cattle ranch.

A chance meeting with a stranger on the road provides the Hardy boys with a clue to a gang of local burglars.

Once again Frank and Joe Hardy accept the challenge of 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 friend Chet Morton, Frank and Joe tackle another mystery -- one which has baffled the town of Bayport for many years: What caused...