A movie of second chances. Answers that burning question of how one of us could the lives of millions of others. The film keeps this claustrophobic tension as the weight of responsibility crushes our protagonist. Source Code never shows its full hand and keeps a lean runtime to keep from growing stale. Compared to Tony Scott's Deju Vu (2006), this lacks a tad bit of urgency to me. Still a good slice of that early 2010's era.