The trailer for Source Code.

When decorated soldier Captain Colter Stevens (Jake Gyllenhaal) wakes up in the body of an unknown man, he discovers he’s part of a mission to find the bomber of a Chicago commuter train. In an assignment unlike any he’s ever known, he learns he’s part of a government experiment called the “Source Code,” a program that enables him to cross over into another man's identity in the last 8 minutes of his life. With a second, much larger target threatening to kill millions in downtown Chicago, Colter re-lives the incident over and over again, gathering clues each time, until he can solve the mystery of who is behind the bombs and prevent the next attack.

Filled with mind-boggling twists and heart-pounding suspense, Source Code is a smart action-thriller directed by Duncan Jones (Moon) also starring Michelle Monaghan (Eagle Eye, Due Date), Vera Farmiga (Up in the Air, The Departed), and Jeffrey Wright (Quantum of Solace, Syriana).