Nightmare (1956) is a Crime, Mystery, Thriller film that follows clarinetist Stan has a nightmare about killing a man in a mirrored room. But when he wakes up and finds blood marks on himself and a key from the dream, he suspects that it may have truly happened. Currently, you can watch Nightmare on ScreenPix Apple TV Channel, ScreenPix Amazon Channel . Streaming availability may vary by country and platform over time. It has a user rating of 6.1 out of 10 from 22 votes. Fans of crime movies may also want to explore similar titles below.