The young Hardy boys, Frank and Joe, are sent on a mission to locate the missing son of Don Ricardo on St. John, USVI because the police have hit a blank wall in the case.
In this change of pace adventure, Frank and Joe Hardy discover a rogue mentor agent within A.T.A.C. (American Teens Against Crime) -- when that agent tries to kill them! But it's soon discovered he was being manipulated by malevolent forces who kidnapped his child -- and now the Hardy Boys have only until dawn to find the man's son!.
Frank and Joe investigate after two teenagers are apparently frightened to death at the Undercliff House of Detention, a juvenile detention facility in Connecticut that was originally an insane asylum.
While teen superstar Justin Carraway shoots his latest movie in Bayport, Frank and Joe attempt to discover the identity of the stalker who is sending the actor threatening letters before anyone gets hurt.
