Sam (Jared Padalecki) and Dean (Jensen Ackles) reunite with Castiel (Misha Collins). Digging through the Men of Letters’ files, they stumble upon an undiscovered film which could be the key to the third trial. Metatron (guest star Curtis Armstrong) enlists Cass to mull over problems at home. Meanwhile, Crowley (guest star Mark Sheppard) digs into Sam and Dean's past. Taylor Cole, Graham Wardle, and Cindy Busby also guest star.