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...

Joe and Frank go looking for the Blackstone fortune. They come upon a sea monster, are knocked out by a thug, and are taken hostage.

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.

Their efforts to recover a stolen ancient chess piece lead the Hardy brothers to Hong Kong where they help smash an international criminal organization.

Extremists may resort to drastic measures to protect the environment, but did they really threaten the owner of a mall?

MISSION: To investigate the shady goings-on at the exclusive private boarding school Willis Firth Academy. LOCATION: The mountains of New England. POTENTIAL VICTIMS: The brothers of Gamma Theta Theta, the most elite fraternity on campus, seem to be on the receiving end of all of Firth's biggest (and most dangerous) problems. SUSPECTS: The members of the frat may seem like brothers to everyone else, but Gamma Theta Theta insiders know that within...

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.

In solving the mystery of two medallions missing from an inherited curio collection, the Hardys wind up in a desolate area of Guatemala at the mercy of dangerous thugs.

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

Brothers Frank and Joe Hardy and their elementary school friends help them track down what they hope is a treasure after they find a mysterious map.