Charlie tells Dean and Sam she has something that can remove the Mark of Cain on Supernatural. "Book of the Damned" is the 18th episode of the show's tenth season.
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Dean, Sam, and Castiel must deal with Cain's returns on Supernatural. "The Executioner's Song" is the 14th episode of the show's tenth season.
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The Winchester Bros. are strolling around eating food.
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Strolling down the avenue eating some munchies. It works.
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Sam hangs out on the street while Castiel takes a breather.
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Sammy looks pretty smooth in his nice suit, doesn't he?
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Is everyone getting ready to part ways? Looks like it.
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Sam looks through a rather rustic building at the retreat.
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Supernatural Quotes

Dean: So you’re saying we’re both a couple of dumbasses.
Cas: I prefer the word trusting. Less dumb, less ass.

You betrayed me? No one in the history of torture's been tortured with torture like the torture you'll be tortured with.

Crowley