/27 Horror Films So Legitimately Terrifying, People Lost Sleep Over Them

27 Horror Films So Legitimately Terrifying, People Lost Sleep Over Them

What’s a horror movie that kept YOU up all night (or year) after watching it? Share yours in the comments below, and don’t forget to follow the BuzzFeed Community for a chance to be featured in an upcoming BuzzFeed post or video!

Some entries have been edited for length and/or clarity.

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