1. The Exorcist (1973)
Paul Bateson played a radiologist's assistant in The Exorcist. He was a convicted murderer who dismembered and killed gay men in the late '70s.
13. Saw (2004)
Saw was actually inspired by a news story. The idea came about when James Wan saw a news report that described a man who would break into people homes and tickle the feet of sleeping children.
Once the man in question was caught, he revealed that he was forced to do it by someone else & was sent a jigsaw piece. This is where the idea of the jigsaw killer forcing characters to do unthinkable things flourished.
15. The Shining (1980)
Stanley Kubrick created all 500 pages with the words “all work and no play makes Jack a dull boy”. Kubrick didn’t go to the prop department with the task and instead, he used his own typewriter to make the pages.