hardy boys (fictitious characters)

A "monster" who terrorizes Bayport and a girl who runs away to join a cult are the subjects of the Hardy boys' sleuthing.

When their detective father asks them to play burglar in order to protect a client's valuable invention from thieves, the Hardy boys find themselves involved in a large and dangerous conspiracy.

After a dying criminal confesses that his loot has been stashed "in the tower", the Hardy boys make an astonishing discovery.

The Hardy boys and their father solve a mystery involving inexplicable crashes of high-speed race cars being used to test an experimental turbine motor.

Frank and Joe protect the son of the President of the U.S. during the Winter Max-Games.

Frank and Joe Hardy go undercover at an international spelling bee where a killer known only as the Hangman is targeting competitors.

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

Collects three novels featuring the Hardy Boys, including "The Tower Treasure, " in which Frank and Joe help their dad discover who robbed a neighbor; "The Secret of the Old Mill, " in which the boys investigate a counterfeiting, and a national security case; and "The Haunted Fort, "in which Frank and Joe are joined by their friend Chet in a dangerous search for stolen paintings.

Frank and Joe go undercover to discover why teen seamen on an old fishing boat keep going missing.

The inhabitants of Morgan's Quarry try to keep the town's secrets from the Hardy Boys.