 Castiel tricks Theo into releasing him and steals his Grace, transforming Castiel into an angel once more and at least restoring his powers.Castiel calls Dean and tells him that while he was held captive by Malachi he learned that the angel Ezekiel is dead and so the angel possessing Sam must be an impostor.After being contacted by Dean, Castiel, now wearing a new suit and trench coat and driving a stolen car as he can no longer teleport, returns to the bunker where he comes up with the plan to have Crowley help expel Gadreel from Sam.