One exciting event follows another when Frank and Joe Hardy are hired to apprehend the pickpockets who have been plaguing Solo's Super Carnival. When their friends Tony Prito and Biff Hooper exhibit a stuffed whale dug up at a construction project, they all but put the carnival out of business. Other unforeseen problems ensue when the teen-age sleuths become involved in their father's latest case. Fenton Hardy is tracking down a priceless ivory idol...

The Hardy Boys help their detective father search for a famous rocket scientist whose disappearance endangers the launching of the Firebird Rocket.

A long-distance telephone call from Chet Morton's uncle summons Frank and Joe Hardy and their staunch pal Chet to a summer art school, located near old Fort Senandaga, which is reputed to be inhabited by a ghost. The young detectives' assignment: recover two famous oil paintings stolen from the valuable Prisoner-Painter collection owned by Jefferson Davenport. Mr. Davenport, millionaire sponsor of Millwood Art School, reveals that one of the famous...

Frank and Joe shadow teen superstar Justin Carraway to figure out the identity of his mystery stalker before events turn deadly.

Frank and Joe travel to the south of France to help teen Village International rebuild a deserted town as a center for refugee children. But a local legend of a haunted castle and its lord who hid a fortune in diamonds within its thick stone walls, stirs up strange noises, spooky lights, and close shaves that convince the Hardys someone is trying to sabotage the project.

The Hardy brothers' search for the missing son of a wealthy industrialist leads them to Brazil and great danger.

Frank and Joe travel to Philadelphia where they intend to prevent an attack on an extreme sports contest called the Big Air Games.