Prominent criminal attorney Amos Strickland (Nicholas Joy) checks into the Lost Caverns Resort Hotel. His murdered body is later discovered by the bellboy, Freddie Phillips (Lou Costello), who is implicated in the crime. Casey Edwards (Bud Abbott), the house detective, tries to clear Freddie, but Inspector Wellman (James Flavin) and Sgt. Stone (Mikel Conrad) keep him in custody at his hotel room 'on the state'.