By making the correct decisions, the reader assists the Three Investigators in defeating a killer cult, whose members have kidnapped a ransom victim to get their hands on a valuable statue.
When an ornery book collector disappears, the Three Investigators break into his secret computer files in search of clues and gradually uncover his mysterious past.
While accompanying Pete's inventor grandfather to New York where the old man plans to sell his new invention, the Three Investigators find themselves in the middle of a dangerous spy case.
