The French Sex Murders (Casa d'appuntamento) is a 1972 Italian-West German-French 'Giallo' horror mystery thriller film. It features Anita Ekberg, Rosalba Neri, Evelyne Kraft, and Howard Vernon. After a French prostitute is found dead, one of her regular clients is tried and convicted for her murder. He is eventually sentenced to death but dies in a high speed pursuit after attempting to escape custody. Soon, the witnesses that testified against him end up being systematically murdered by a mysterious killer wearing black gloves.