Supernatural › Season 10

S10 E21: Dark Dynasty

Dean and Sam investigate a bizarre murder and realize the killer bears the same tattoo as those from the Styne family. Meanwhile, Castiel acts as referee when Charlie and Rowena are forced to work together on the Book of the Damned. When Crowley discovers that his mother is missing, he turns to an old enemy for help.

Air date	May 6, 2015
Runtime	43 minutes
TMDB rating	★ 7.6/10