With enough aliases to fill a hotel ledger, this horror classic by Riccardo Freda focuses on the past and present of Michael Stanford (Stefano Patrizi), a successful actor. His father was knifed to death years ago and now Michael and his girlfriend Deborah (Silvia Dionisio) are going to spend a week-end with Michael's mother. Joining them are the director and crew of a motion picture in the works. Oliver the housekeeper (John Richardson) does not extend a warm welcome to the guests, but that might just be his personality. After everyone is settled in, a deranged killer begins a series of murders. Is the occult at the heart of these killings? Or are Michael's fears about the past starting to come true?
