Psycho III (1986) is a Horror, Mystery, Thriller film that follows when Maureen Coyle, a suicidal nun who resembles Norman's former victim, Marion Crane, arrives at the motel, all bets are off and "Mother" is less than happy. Currently, you can watch Psycho III on Amazon Video, Apple TV Store, Google Play Movies, YouTube. Streaming availability may vary by country and platform over time. It has a user rating of 5.7 out of 10 from 433 votes. Fans of horror movies may also want to explore similar titles below.