A judge visits a condemned man in prison who claims that he was taken over by an evil spirit that caused him to commit evil crimes. When the prisoner dies, the dark spirit finds a new host to take over: the judge.
A web of obsession and deceit unfolds when Scottie Ferguson, a retired detective, falls in love with Madeleine, the wife of an old college friend. She has hired him to follow her, resulting in a tragic death because of his crippling fear of heights.
Wishing to improve her situation in life, Marion Crane decides to steal $40,000 from her boss. On route to meeting her lover, Marion gets caught in a storm and decides to spend the night at a desolate motel, which leads to a tragic outcome.