Source Code (2011)

Duncan Jones confines Colter Stevens inside the claustrophobic eight minutes preceding a commuter train explosion, transforming repetition into an exercise in profound military grief. As Colter relives the fiery catastrophe to harvest intelligence, the film highlights the cruel alienation of an operative forced to perish repeatedly for a world he can no longer rejoin. His quiet determination to offer dignity to passengers who do not realise they are ghosts gives this relentless exercise its moral resonance.