Michael is a successful actor, but he has a scandal in his past: at a tender age he knifed his father to death. He and his girlfriend Deborah go to his mother's for the weekend, and are joined by the director and others from a recent film project, who are given a rather cool reception by the superstitious housekeeper Oliver. Soon rude things begin happening to some of the guests, and Michael fears a repeat of his nightmare past is in progress.

• Société Nouvelle Cinévog
• Dionysio Cinematografica
• Stefano Patrizi
• Martine Brochard
• Henri Garcin
• Laura Gemser
• John Richardson
• Anita Strindberg
• Silvia Dionisio
• Fabrizio Moroni