The Exorcist (1973) is often cited as one of the scariest horror movies of all time, which of course means that some modern viewers who haven’t seen it think it’s overrated or poorly aged. Well, I’m here to tell them how wrong they are. It’s not an exaggeration to say that William Friedkin and The Exorcist changed horror movies forever in 1973 when the supernatural horror film, based on William Peter Blatty’s 1971 novel, dropped on unsuspecting audiences. It’s a masterclass of horror and filmmaking, and it’s never a bad idea to remind people why.