The phrase often serves as a shorthand for several famous historical mysteries often discussed on platforms like Reddit's Bigfoot community :
The film stars Ella West Jerrier as Rachel and SophieGrace McCarthy as Kaitlyn, with Angela Kinsey ( The Office ) playing a concerned parent. 2. Documentary and Television Series
Beyond fiction, the title is used for projects documenting "real" wilderness scares:
The title is most prominently associated with a Lifetime original movie (2018) inspired by the real-life Slender Man stabbing, but it also refers to a documentary series and various accounts of cryptid encounters. 1. The Lifetime Original Movie (2018)