Watch a Video About the Bizarre Incidents that Haunted Horror Movies like 'The Exorcist' and 'The Omen'

Keep telling yourself, it’s just a movie. That may be the best strategy for getting to sleep after watching a notoriously nightmare-inducing film like The Exorcist or The Omen. Or, if you never want to sleep again, watch this Buzzfeed video above of terrifying true incidents that happened during various horror movie productions. You’ll learn how the clown that attacked the little boy in Poltergeist almost strangled him for real. You’ll discover that one person who worked on The Omen met the same gruesome fate as an onscreen victim; that a dead body washed up near the set of the Amityville Horror remake; and that nine deaths were associated with the production and release of The Exorcist. Did real demons haunt these films? “We were playing around with something we shouldn’t have been playing around with,” the Exorcist special effects artist has said. But go on. Keep telling yourself, it’s just a movie.