“Advanced Thanatology” — (8:00-9:00 p.m. ET) (TV-14, DLV) (HDTV)

BILLIE RETURNS…BUT NOT LIKE BEFORE – 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 (#1305). Original airdate 11/9/2017.

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