Castiel is back on the episode "The Third Man." Check out this clip from the 10/8/10 episode of the show.
Check out the official promo for The Third Man. On the episode, Sam and Dean call on Castiel for assistance as they investigate a case about several dead police officers.

Supernatural Season 6 Episode 3 Quotes

Dean and I do share a more profound bound. I wasn't going to mention it.


Who died and made you boss?