Hardy boys undercover brothers

Frank and Joe must discover who is forging versions of valuable comic book art.

When teen movie-star Justin Carraway's twin brother disappears, Joe and Frank Hardy decide to investigate.

The Hardy boys take on an international illegal CD-burning operation, starting their investigation close to home: their first suspect is their classmate, Julian Sanders.

Frank and Joe Hardy are undercover agents for the American Teens Against Crime organization and are assigned to investigate the sabotaging of an extreme sports meet in Philadelphia.

Frank and Joe investigate the power behind a possibly dangerous Utopian community and criminal activity within the oil industry.

Joe and Frank Hardy, undercover agents for ATAC--American Teens Against Crime--travel to Ocean Grove, New Jersey, on an assignment to figure out who is responsible for a rash of jewelry store robberies in the tourist town.

Frank and Joe have eight hours in which to locate a bomb designed to blow up Billington Resort.