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.
Stefano Patrizi
as Michael Stanford
Martine Brochard
as Shirley
Henri Garcin
as Hans Schwartz
Laura Gemser
as Beryl
John Richardson
as Oliver
Anita Strindberg
as Glenda
Silvia Dionisio
as Deborah
Fabrizio Moroni
as