"Goodbye Stranger" (Season 8, Episode 17), directed by Thomas J. Wright and written by Robbie Thompson, aired in 2013 and centers on the hunt for the Angel Tablet. Castiel, under Naomi's control, searches for Lucifer's Crypts, ultimately breaking free after a showdown with Dean and rescuing Meg, who is subsequently killed by Crowley. Detailed episode information is available at Supernatural Wiki .