In a small town in Massachusetts, four high school girls perform a ritual in an attempt to debunk the lore of Slender Man. When one of the girls goes mysteriously missing, they begin to suspect that she is, in fact, his latest victim.

• Madhouse Entertainment
• Mythology Entertainment
• Joey King
• Julia Goldani Telles
• Jaz Sinclair
• Annalise Basso
• Alex Fitzalan
• Taylor Richardson
• Javier Botet
• Jessica Blank