We recently asked members of the BuzzFeed Community to tell us about the creepiest documentary they've ever watched. Here are the best answers.
1. There's Something Wrong with Aunt Diane, 2011

2. The Cannibal That Walked Free, 2007

3. Countdown to Zero, 2010

4. The Bridge, 2006

5. Dreams of a Life, 2011

6. Tickled, 2016

7. Just, Melvin: Just Evil, 2000

8. The Nightmare, 2015

9. Dear Zachary: A Letter to a Son About his Father, 2008

10. Child of Rage, 1992

11. Rats, 2016

12. Albert Fish: In Sin He Found Salvation, 2007

13. Paradise Lost: The Child Murders at Robin Hood Hills, 1996

14. Jesus Camp, 2006

15. Into Eternity, 2010

16. Cropsey, 2009

17. Room 237, 2012

18. Beware the Slenderman, 2016

To find out where these shows are available in your region check out JustWatch.