Four years ago, Sam (Jared Padalecki) and Dean (Jensen Ackles) helped a woman named Nora (guest star Nicole Oliver) exorcise a demon that was systematically killing women in a small town. They managed to save the postal worker, Jeffrey (guest star Russell Sams), while vanquishing the demon but now it seems the black-eyed monster has reared his ugly head and returned for a second helping. The brothers visit Jeffrey, who has been locked in a psych ward since the incident, to see if he can remember any of the demon's plans while he was possessed.