The Sinister Monk (1965) is a Crime, Thriller, Mystery film that follows a hooded serial killer finds a novel way to murder his victims--he lashes them to death with a whip. The police try to track him down before any more murders occur. Currently, you can watch The Sinister Monk on Amazon Video. Streaming availability may vary by country and platform over time. It has a user rating of 6.7 out of 10 from 32 votes. Fans of crime movies may also want to explore similar titles below.