Supernatural: Dark Dynasty Season 10, Ep 21
When Rowena seems to be getting nowhere on decoding the Book of the Damned, Sam brings in Charlie and Castiel to help. The Styne family continues their search for the Book of the Damned. While Dean researches the Stynes, he comes upon a case for him and Sam.
Supernatural: Book of the Damned Season 10, Ep 18
Charlie returns with some potentially good news for Dean. Sam and Dean are increasingly at odds about how to deal with the Mark of Cain. [more inside]