REdrUM is seen and written by the child (Danny Lloyd) in Stanley Kubrick's horror movie "The Shining." Danny writes it in red on a door in the room that he and his family are staying in. As his mother (Shelly Duvall) wakes up from taking a nap in the room, she looks across the room into a mirror and sees MUrdER. Tony (the "little boy that lives in" Danny's mouth) also often says redrum through Danny as a way to warn Danny of the evils of the hotel.

Redrum: The Shining II is also the name of a video game that is intended as being a sequel to the movie.