SLENDER MAN Trailer Premiere Here is the first SLENDER MAN trailer! The film, directed by Sylvain White (The Losers, Stomp the Yard), stars Joey King, Julia Goldani-Telles, Jaz Sinclair, Annalise Basso, and Javier Botet. SLENDER MAN will be released in theaters on May 18. Slender Man tells the story of a tall, thin, horrifying figure with unnaturally long arms and a featureless face, who is reputed to be responsible for the haunting and disappearance of countless children and teens.