Dominique becomes hysterical when long-time lover and business partner, Henri, tells her he is leaving their relationship to be with his pregnant girlfriend, Julie. When threatening suicide fails to change Henri's mind, she comes up with a more desperate plan. Dominique attempts to frame Julie for murder by luring her beautiful rival to a cliff side and then leaping to her death. In the aftermath, a distraught Henri tries to convince police that he was the one who killed Dominique in order to save Julie from prosecution. Detective Waldeck works to piece together the complicated case.