Franklin W Dixon

The students at Bayport Elementary get ready to compete for Field Day, in which prizes will be offered to the winning grade and the student with the overall high score, but Frank and Joe uncover a mystery when they discover someone has tampered with the equipment the day before the competition.

Frank and Joe Hardy are suspicious of Max O' Malley, a new kid in town who claims to be a magician, and when Mrs. Briar's prized show dog arrives and Charlie begins to disappear and reappear, Max becomes the prime suspect.

Frank and Joe must take the shine off a jewel thief who sends ominous riddles in this Hardy Boys adventure. First a priceless painting disappears from the museum; then two ancient samurai swords vanish from a private collection. A string of robberies has hit Bayport, and all signs point to the Phantom, a recently released ex-con who last struck more than twenty years ago. There's only one problem: the Phantom has vanished into thin air, and not even...

When new team members are being kidnapped and threatened, Frank and Joe join the basketball team at the request of their principal to uncover the culprits.

The Hardy brothers investigate after reports of a beast attacking people. Is the Bayport Beast real after all?

Joe Hardy is kidnapped by a gang of jewel smugglers as a warning for the Hardy Boys' father to stay away from their operation.

The robbery of the treasure in the tower proves to be an exciting challenge to Frank and Joe. Frank and Joe attempt to foil a ruthless espionage ring in their effort to sabotage the United States space program.

Frank and Joe solve a double mystery by locating a college professor who has been kidnapped by foreigners involved in sabotaging a government radar installation.

As Frank and Joe investigate the mysterious disappearance of a college professor, they stumble upon a baffling secret in a complex network of caves.