Sam (Jared Padalecki) and Dean (Jensen Ackles) are stumped when they investigate a possible zombie case where an amnesiac man (guest star John Reardon) dies and then revives himself once a day.  After the guy is attacked by the goddess Artemis (guest star Anna Von Hooft), Sam and Dean realize he’s not a zombie but instead a god, more specifically, Prometheus.  Steve Boyum directed the episode written by Daniel Loflin.