Jack Reacher is a 2012 American action thriller film written and directed by Christopher McQuarrie, starring Tom Cruise and based on Lee Child's novel One Shot. Cruise portrays the title character and the supporting cast features Rosamund Pike, Werner Herzog, Robert Duvall, David Oyelowo, Richard Jenkins and Jai Courtney. The film focuses on a normally non-contactable former US Army Major MP investigator Jack Reacher, who is called upon to aid in a homicide investigation involving a trained military sniper believed to be responsible for a mass shooting.