While the project has received a trailer already, no one knew exactly when HBO would decide to air the documentary.
Beware The Slenderman will debut on HBO Monday, January 23 at 10pm ET.
The film follows the true accounts of two 12-year-old girls who killed their friend in the woods of Wisconson. The children thought they needed to please the Slenderman, and they were convinced to slaughter their classmate.
The documentary deals with the legend of Slenderman, and how much a legend like that can affect the mind of a child. While an adult would always disregard these kinds of myths, children can be easily swayed by their fears.
Irene Taylor Brodsky - who directed the Oscar nominated film The Final Inch - helmed the new movie for HBO, and aimed to dive in to every angle of the mysterious case. Unlike any news footage or documentaries in the past, Beware The Slenderman will give audiences exculsive access to the families of the girls, testimonials from the court hearings, and authentic footage from the police interrogation room.
The film looks incredibly terrifying, and may be difficult for anyone to watch. Viewers can expect an emotionally disturbing experience, but a one-of-a-kind film that they won't soon forget.