Watch ‘Supernatural’ Previews Thursday

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Supernatural 12×22 “Who We Are” & 12×23 “All Along the Watchtower” Promo (Season Finale) – Caught in a dangerous situation, Sam (Jared Padalecki) and Dean (Jensen Ackles) only have each other to rely on. Meanwhile, the fight between the American Hunters and the British Hunters comes to a head. John Showalter directed the episode written by Robert Berens (#1222). Original airdate 5/18/2017.

Supernatural 12×23 “All Along the Watchtower” (Season Finale) – EPIC SEASON FINALE – 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 (#1223). Original airdate 5/18/2017.