These are photos from Supernatural Season 10 Episode 21, "Dark Dynasty."
1.
Castiel and Rowena - Supernatural Season 10 Episode 21
It's a Castiel and Rowena standoff. Or are they working together?
2.
Serious Talk - Supernatural Season 10 Episode 21
Castiel does not look pleased with Rowena. I bet she knows a secret about the Book of the Damned that she won't tell.
3.
Staring Contest - Supernatural Season 10 Episode 21
Staring contest between Castiel and Rowena. Go! I've got a feeling Castiel will win this one.
4.
Rowena - Supernatural Season 10 Episode 21
Rowena seems unimpressed. Or maybe she chipped a nail studying the Book of the Damned?
5.
Charlie - Supernatural Season 10 Episode 21
Charlie looks hard at work doing research. Is she helping out in trying to figure out the Book of the Damned?
6.
Charlie and Castiel - Supernatural Season 10 Episode 21
Castiel brought groceries to the research party. Charlie looks like she's questioning if Castiel remembered her favorite snack.
7.
Reading Rowena - Supernatural Season 10 Episode 21
Rowena is dedicated to her work and finding out how to read the Book of the Damned. That and she's been locked up by Sam to get the job done.
8.
Charlie Focused - Supernatural Season 10 Episode 21
Great to see Charlie is back! She's definitely going to add a level of fun to the serious business of trying to get rid of The Mark of Cain.
9.
Three's Company - Supernatural Season 10 Episode 21
Castiel, Charlie and Rowena working together? Something is bound to go wrong...
10.
Sam and Dean - Supernatural Season 10 Episode 21
Sam and Dean look like their having a private conversation. But what are they looking at?
11.
Sam - Supernatural Season 10 Episode 21
It's go time, and Sam is ready to get down to business.
12.
Dean - Supernatural Season 10 Episode 21
It's go time, and Dean is here to get down to business.
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