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Switchback's lead character is a serial killer. Of course, he's a "movie serial killer," which means that he doesn't kill for sexual pleasure and he's sane enough to out-think the entire cast. Jared Leto plays one of the dumbest characters ever put on screen, but R. Lee Ermey is watchable as always and there's an exciting climax set on a moving train speeding through the snowy wilderness. The screenplay is needlessly complicated, with too many subplots that dilute the intensity of the action scenes (Die Hard was far more pure in comparison) but it's entertaining nonetheless.