Mindfuck

A person in a blood-stained blue jacket stands in a doorway, facing another figure whose back is to the camera, as a large amount of blood erupts from the second figure's head and splatters across the wall and the first person's face. The scene is set in a dimly lit room with a patterned wall and a light switch, viewed through a window with horizontal blinds that are initially closed and then open to reveal the violent event.