Source Code

The Plot: An experimental government program sends soldier Colter Stevens (Gyllenhaal) back in time, where he wakes up in the body of a commuter who witnesses a train bombing. Presented with just 8 minutes to figure out who is responsible, his mission is further complicated by his feelings for a fellow passenger (Monaghan).

When decorated airman Captain Colter Stevens (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.
Filming

Filming began on March 1, 2010 in Montreal, Canada and ended on April 29, 2010.[1] Several scenes were shot in Chicago, Illinois, specifically at Millennium Park.
Post-production

Editing took place in Los Angeles. In July 2010, the film was in the visual effects stage of post-production.[2] Jones had confirmed that the film's soundtrack would be composed by Clint Mansell, in his second collaboration with the composer.[3] However, it was later announced that Mansell will no longer score the movie's soundtrack due to time constraints.[4] He was replaced by Chris P. Bacon.[4]