The chilling R-rated version of this thriller takes its cue from the classic “Carnival of Souls.” When a group of college students leave a club, they get into a car accident in which Cassie (Melissa Sagemiller) is injured, and her friend Sean (Casey Affleck) is killed. But once she has recovered enough to return to school, Cassie is convinced she's seeing Sean around campus. Wes Bentley.