 When talking with another angel at an auction for the second Word of God tablet, Dean again states that Castiel did not make it out of Purgatory.He later escapes with the aid of an army of angels sent to rescue him – having initially remained behind as penance for his actions to stop a duo of Leviathans that were trying to attack Dean and Benny as they left Purgatory – but the other angels not only erase his memory that they were responsible for his escape, but also erase his memory of their subsequent 'check-ins' to discuss the Winchesters' actions, with Castiel forced to tell them about the Winchesters' progress in the search for the tablet.Apparently back to full power, Castiel helps the Winchesters save Kevin from Crowley – who has been abducting future Prophets to try to find another means of reading the Word of God tablet – and destroy the tablet to prevent Crowley using it, retaining half of the tablet while Crowley flees with the other half.