In The Hardy Boys: The Hidden Theft, the vault of the Spencer Mansion is robbed, and the Bayport Police call on the Hardy Boys to help tie up some loose ends, but they soon find themselves in the middle of a major criminal investigation that takes them on an adventure all over Bayport, and even into New York City. But the pieces don\'t add up, and Joe and Frank find themselves embroiled in a drama of sinister proportions. Is the recent theft linked to something from the past? Can Joe and Frank fi