Dean appears to be calm. No Mark of Cain action in his dealings with Tessa in this this photo from "Stairway to Heaven."
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It appears as if Tessa will be answering some questions as shown in this photo from "Stairway to Heaven."
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Tessa the reaper is back when Lindsay McKeon guest stars as shown in this photo from "Stairway to Heaven."
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Driving home the fact that the quest is of importance, here's another photo of Castiel and Dean searching from "Stairway to Heaven."
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Cas and Sam really need to find something as shown in this photo from "Stairway to Heaven."
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Sam finds a clue in this photo from "Stairway to Heaven."
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Sam and Castiel are using flashlights to aid their search in this photo from "Stairway to Heaven."
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What's behind the door? It looks a lot like a scene of Aliens landing, but that'd doubtful. Place your bets while your enjoy this photo from "Stairway to Heaven."
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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

Castiel: It's very complex. If the pizza man truly loves this babysitter, why does he keep slapping her rear? Perhaps she has done something wrong.
Dean: Are you watching porn? Why?
Castiel: It was there.
Dean: You don't watch porn in a room full of dudes. And you don't talk about it. Just turn it off. Well now he's got a boner.