When a couple vacationing in Tangiers (George Nader and Anne Smyrner) run into an old friend there, they discover that he is searching for his missing girlfriend (Maria Rohm), who has been kidnapped by an international gang of white slave traders. Nader investigates, but before he can come up with anything, his friend is murdered! Meanwhile, nightclub magician Manderville (Vincent Price) and his assistant (Martha Hyer), continue their nefarious activities as they hypnotize and kidnap young women for the 'White Slavers', and spirit them to the "House of 1000 Dolls."