freakiest movie you've ever watched

So I love me some lifetime movies and anybody that watches lifetime knows how freaky those movies can get. Last night I watched the girl in the box. It's about a girl she was hitch hiking and they abducted her over 7 years. The man was into bdsm (no judging I like a little but we aren't that extreme) and his wife couldn't handle it so he needed someone to take it out on so him and his wife could have sex. They locked her in a box and she was their slave. Anyway, it's actually based on a true story and it's probably one of the freakiest movies I've watched so far. (Mostly cause it's based on a true story) spoiler alert: he did go to prison. What's the freakiest movie you've watched so far and what's it about?