All Along the Watchtower: Lucifer (Mark Pellegrino) battles Sam (Jared Padalecki), Dean (Jensen Ackles) and Castiel (Misha Collins) for control of his unborn child.
Robert Singer directed the episode written by Andrew Dabb.
Series: Supernatural Season 12 Episode 23 (Season finale)
Air Date: Thursday, May 18, 2017
Time Slot: 9:00 PM-10:00 PM EST on The CW