Supernatural’s Mark Sheppard: Is Crowley really the devil on Castiel’s shoulder?

"Supernatural may only have a few episodes to go before its sixth season finale, but it seems there are still a lot of unanswered questions, are we right? Maybe even more so than any season prior, especially with the somewhat shocking return of Crowley (Mark Sheppard) and the revelation that he and Castiel (Misha Collins) have actually been working together this whole time we thought he was gone for good. Say it ain't so!?

Well, we had a chance to chat with Sheppard today to try to get him to set the record straight about quite a few things. He didn't want to spoil too much, noting a bit cheekily that half the fun is that surprise of seeing something you never expected play out on-screen. And Supernatural is certainly known for that (after all, no one ever seems to truly stay dead over there!), so we can definitely expect a few twists and turns still to come."

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