Episode Description: Beware, spoilers! To read - hover over the text.
Dean is devastated after the death of Kevin and vows to find the angel that killed him, not only in order to free Sam, but for the sake of revenge. Castiel arrives at the bunker and suggests they will be able to separate the minds of Sam and talk to him to expel Gadreel. However, there is a small problem: the only one who knows how to do it — Crowley.