Cas is with the boys; is this a flashback? If it's present day, how did Cas get out of Purgatory, and did Dean lie about him? And what is that mysterious hole Dean is putting his arm into? Ponder those juicy spoilers and more in these behind-the-scenes photos from the Supernatural set in Vancouver taken October 5. And be sure to share your guesses in the Comments!
Source: Nigel Horsley