Beware the Slenderman: Watch the Trailer for HBO's Bone-Chilling Documentary
Haven't heard of Slenderman? Count your lucky stars. The Internet figure is the subject of a new documentary, Beware the Slenderman, and he's about to haunt your nightmares. The HBO doc shows the aftermath of a heinous attack carried out in his name, and it's only a few months away from hitting your TV screens. If Slenderman (also stylized as Slender Man) sounds familiar, you may have heard his name connected to season six of American Horror Story a few months back. It doesn't look like he'll be featured on the show, but for now, brush up on what you need to know about Beware the Slenderman.