Iron Doors is a German 2010 thriller movie directed by Stephen Manuel.
Mark Johansson is a foul-mouthed, short-tempered, cynical and sarcastic investment banker. As the film begins, he wakes up on the floor of a locked and empty bank vault. His only companions are a locked steel cabinet, a swarm of flies, and a dead rat. Mark has no idea who kidnapped him, or how, or why; or how to get out.