Beyond Good & Evil (2008)

Chris Peterson is an aging homicide detective just trying to make it to retirement when he catches the case that will change his life forever. While tracking a sadistic serial murderer his investigation brings him face to face with his worst fears and his own dark side. Always one step ahead of his pursuer, the killer plays an artful game of cat-and-mouse, until the roles of predator and prey become reversed. As their paths hurtle along this collision course, Peterson soon realizes his own worst fear - all men are capable of evil.