Not long to go to the season finale, but I don't want this season to end! Here is the description for episode 8.22 Clip Show.
FAMILIAR FACES RETURN AS THE THIRD TRIAL NEARS — 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. Thomas J. Wright directed the episode written by Andrew Dabb. Source: KSiteTV
So, the other guest stars for this episode include Graham Wardle, who appeared in Wendigo, and Cindy Busby who appeared in Shut Up, Dr Phil. Very interesting in seeing how things will play out. They are not major big name guest stars, but their characters were significant in these episodes as victims. Read the full article on the guest stars on Zap2It