Play it in the theater projector and enter the movie through the screen
Movie Theater Film Storage Room
Silent Hill: Downpour
"The Secret in the Attic" Film Reel is an item required for the "Cinéma Vérité"sidequest in Silent Hill: Downpour. It is one of three film reels that must be played using the theater's projector so that the player may enter the movie through the screen. Regardless of the puzzle difficulty, the film reel can be found in the film storage room past the projector room of the Chastain Heights Cinema.