Mind of a Monster: The Grim Sleeper (2021) is a Documentary, Crime film that follows an LA serial killer goes silent for decades – but he was just warming up. Currently, you can watch Mind of a Monster: The Grim Sleeper on Philo, Amazon Video, Fandango At Home. Streaming availability may vary by country and platform over time. It has a user rating of 4.8 out of 10 from 5 votes. Fans of documentary movies may also want to explore similar titles below.