House of 9 is a 2004 psychological horror film directed by Steven R. Monroe and starring Dennis Hopper and Kelly Brook. It premiered at the Cannes Film Festival on 20 May 2004.
Nine strangers have been abducted and locked inside a house. A mysterious voice called The Watcher (voiced by Jim Carter) tells them that they are to play a game: the last person alive can leave the house and win five million dollars. The film is presented with "live feeds" from hidden surveillance cameras, showing the nine people turning from cooperative escape attempts to a killing fest.