20/20 on ID
Slenderman (7x2)
Air date: Mar 10, 2018
Two 12-year-old girls attack a friend in the woods, leaving her for dead; when questioned by police, the girls say a creature named Slender Man made them do it.
- Premiered: Jun 2011
- Episodes: 117
- Followers: 3
- Ended
- Investigation Discovery
- Unknown