Frank and Joe try to prevent the theft of a valuable collection of diamonds from a show.

A blind peddler's warning and a glass eye plunge Frank and Joe Hardy into a baffling case.

In Private Killer, Frank and Joe continue their undercover investigation of Gamma Theta Theta, a mysterious-turned-dangerous fraternity at an all-boys New England boarding school. The headmaster's meddlesome, trouble-making daughter is in danger, and it seems like the fraternity members-and even some faculty-will stop at nothing to protect their secrets.

Frank and Joe go to the island of St. John to try to find the missing son of a UN ambassador.

Frank and Joe Hardy have been sent on a mission to live on the edge! A new theme park, Galaxy X, is about to open. But someone out there obviously wants Galaxy X to go away. The park owner has received threatening e-mails, and accidents are becoming frequent. In Galaxy X, the brothers have to find the saboteur before opening day, or someone could get seriously hurt. In X-plosion, Frank and Joe must trail pro skater Cody Zane, brought to Galaxy X for...

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

Frank and Joe must find out who is responsible for celebrity Bret Johnston's death, and save Galaxy X, a new theme park in California, and owner Tyrone McKenzie from another tragedy.

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

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

Mission: To stop movie actress Anya Archer's attackers before the blow up everyone at the Big Apple Awards at Radio City Music Hall, New York.