A mysterious killer has been strangling women in a variety theater, and the police decide to bring Santo into the investigation. Santo suspects the killer is hiding undercover as one of the theater employees and must discover his true identity before more women are murdered.

El hombre desarrolla una reputación como un gran atleta de dormitorio después de publicar una novela 'picante'.

A formal dinner party starts out normally enough, but after the bourgeois group retire to the host’s music room, they inexplicably find themselves unable to leave.