Dean takes a trip into the future of 2012, and it's disturbing to say the least. Although that whole bit in the middle with Castiel doesn't seem so bad. And could we be getting a payoff from a Season 1 plot point long since thought dropped?
Steve Boym directed the episode written by Ben Edlund ... so prepare for your brain to be thoroughly turned inside out.
It hurts to set you free, But you'll never follow me.
Promo and longer clips (courtesy The Watcher) below: