Fans were treated to the Sam-Dean confrontation they’ve been waiting for since May’s finale on Supernatural Season 10 Episode 3.
The hour opened with Sam grabbing a cooler of purified blood (remember Season 8? The last time Sam tried to cure a demon?), intent on exorcising the demon from Dean.
How will the Mark of Cain play a role in this mission? It’s unclear, but Sam gets right to it as soon as he returns to the bunker.
Following the first injection, it's apparent that Dean is indeed a "special" demon. Sam calls Castiel because he’s concerned over all the pain his brother is in. Might be killing Dean?
Castiel assures his pal that this is only option... before hanging up and returning to his life of endless road tripping with a totally smitten Hannah.