The 20 Scariest Horror Movies of All Time, Ranked by Collider

"Some movies are just purely horrifying. Since the dawn of cinema, horror has been at the forefront of entertainment, delivering some of the most spectacular and terrifying films in history. They captivate audiences, sending a shiver down their spines at how thrilling and creepy they can be. Yes, the horror genre is full of some truly frightening movies, but which ones stand out as the most chilling? The following entries are top contenders for the scariest of all time. They're iconic and unquestionably disturbing stories that have endured throughout the decade, continuing to scare viewers and filling them with unimaginable terror. They have retained their ability to scare and are as effective today as when they first came out. From Andy Muschietti's 'It' to William Friedkin's 'The Exorcist,' here are the scariest movies from horror cinema." - collider.com