[http://www.imdb.com/title/supernatural/episodes]
Season 5, Episode 21: Two Minutes to Midnight
Original Air Date—6 May 2010
Thur. May 6 9:00 PM CW
Season 5, Episode 22: Swan Song
Original Air Date—13 May 2010
Thur. May 13 9:00 PM CW
One Ring to rule them all
