It adds another layer of terror knowing these are rooted in reality! Welcome to WatchMojo, and today we’re counting down our picks for the most terrifying horror flicks that drew upon real-life crimes or events for inspiration. Our countdown includes movies “The Conjuring”, “Poltergeist”, “Ravenous” and more! Which of these horror movies rooted in reality gave you nightmares? Let us know in the comments.

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