Advanced Thanatology: While working on a case involving the ghost of a demented doctor, Sam (Jared Padalecki) and Dean (Jensen Ackles) get assistance from an unexpected source – Billie (guest star Lisa Berry). Castiel (Misha Collins) finds his way back to the Winchesters.
John Showalter directed the episode written by Steve Yockey.
Series: Supernatural Season 13 Episode 5
Air Date: Thursday, November 09, 2017
Time Slot: 8:00 PM-9:00 PM EST on The CW