Soledad Miranda and Paul Muller star in this film by Jess Franco. Esteemed author Albert Radeck is the toast of the Berlin literati and the object of his stepdaughter Eugenie's affections. However, when his doe-eyed little darling unmasks her sophisticated father figure as a sex-crazed psychopath obsessed with perpetrating the perfect crime, she transforms from innocent ward to a willing accomplice. The deadly duo seduce and destroy everyone in their path - until Eugenie's charms spark a jealous rage in Albert that threatens to consume them both.