It’s been a long time since we saw humanity’s first killer: Cain. In fact, the one and only time he appeared on Supernatural was mid-season 9 when Dean agreed to take on the Mark of Cain in hopes of using it — and the First Blade — to kill Abaddon. Unfortunately, Dean wasn’t entirely aware that the mark would bring out his dark side and, eventually, turn him into a demon when Metatron killed him.
Fortunately, Dean was cured of his demonic state, but the mark — and its effects — still linger. In “The Executioner’s Song”, the Winchester brothers and Castiel meet up with Cain when he resurfaces. Will Cain provide a valuable clue as to how Dean can be cured of the mark or will he be doomed to bear it forever? Meanwhile, Crowley and Rowena continue their amusing — and disturbing, frankly — attempts at bonding, but Crowley soon bails on his plans with mommy to help the Winchester brothers (and, apparently, reunites Dean with the First Blade, according to photos from the episode). Will Rowena finally turn on Crowley?
Browse through photos above for the February 17 episode of Supernatural airing at 9:00 p.m. ET/PT on The CW.