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.
Javier Botet
as Slender Man
Joey King
as Wren
Julia Goldani Telles
as Hallie
Jaz Sinclair
as Chloe
Annalise Basso
as Katie Jensen
Kevin Chapman
as M. Jensen
Alex Fitzalan
as Tom
Miguel Nascimento
as Kyle
Michael Reilly Burke
as Hallie's Dad
Jessica Blank
as Hallie's Mom
Kayla Caulfield
as High School Student
Jeffrey Corazzini
as Police Officer
