The demon Crowley reveals something important to Sam and Dean on the episode "The Devil You Know." He tells them how he's been able to track Sam and Dean.
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Bobby asks in this promo: How are you gonna control the Devil when you can't control yourself? Check it out now.
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Dean and Sam get kidnapped on this episode. The installment is titled "Hammer of the Gods."
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A crazy hotel is at the center of this Supernatural episode. It's titled "Hammer of the Gods."
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This is a clip from the 100th episode of Supernatural. It's titled "Point of No Return."
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"Point of No Return" is the 100th episode in Supernatural history. Check out this preview for it.
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We though Lost was the only show to feature a black smoke monster. This clip from Supernatual proves us wrong.
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Hello there, Cupid! The brothers and Castiel are greeted by Cupid on the episode "My Bloody Valentine." It's funny stuff.
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Supernatural Quotes

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

Crowley

Hey, you leave my baby alone! She's got nothing to do with this!

Dean