Hellmaster (1992) is a Horror film that follows a psychotic college professor uses unwitting students as laboratory rats, injecting them with a drug that mutates them into gory killers Currently, you can watch Hellmaster on Night Flight Plus, Eternal Family, Troma NOW, Amazon Video. Streaming availability may vary by country and platform over time. It has a user rating of 4.4 out of 10 from 27 votes. Fans of horror movies may also want to explore similar titles below.