Former teacher Mark Cobden (Sean Bean) is responsible for the death of an innocent man. Tortured by visions of his victim, he welcomes his four-year sentence as penance. Eric McNally (Stephen Graham) is a dedicated prison officer, doing his best to protect those in charge. But when a dangerous convict threatens to hurt someone Eric loves, he is faced with an impossible choice. 1 DVD, 182 mins. SUBTITLES.