Naomi tells Castiel that Crowley is holding an angel captive and Castiel must rescue him before Crowley finds out their secrets. Castiel turns to Dean for help. Meanwhile, Sam meets…

Charlie calls Sam and Dean to tell them she found the Book of the Dead which could help remove the Mark of Cain. The Winchesters race to her after she…

Jody Mills is matched with an overeager partner during a mandatory sheriff’s retreat; when a gruesome corpse is discovered, Jody calls Sam and Dean to help investigate.