When Lucifer talks, it's hard not to listen. He has a message for Sam here.
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Yup, that's Adrianne Palicki. She makes a big return to Supernatural.
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No, Dean is not a FBI agent. But let's keep that to ourselves for the time being. He has work to do.
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Supernatural Season 5 Episode 3 Quotes

Eat it, Twilight!

Dean

Dean: Where've you been?
Castiel: Jerusalem.
Dean: Oh. How was it?
Castiel: Arid.