InTulsa, Oklahoma, Claire is knocked unconscious in an alley while searching for her mother Amelia, and Castiel calls Sam Dean and bella in to help. After Claire explains what she's trying to do, the Winchesters and Castiel decide to help her with her search. While Sam helps Claire hack her mother's credit card information, Dean bella and Castiel interrogate Ronnie Cartwright, the man who knocked Claire out. According to Amelia's diary, he was the last person to see her. After Dean gets rough, Ronnie admits he sent Amelia to afaith healernamed Peter Holloway who had healed his eyesight. However, he'd quit after seeing that Holloway was up to no good, cutting the people sent to him. After they leave, Ronnie calls Holloway who blinds him once again and kills him. Using this information, Sam is able to track Holloway to a farm house, but leaves Dean and Claire behind due to the Mark of Cain's effects on Dean getting worse. Castiel finds Amelia who is trapped in a dream life where she has reunited with Jimmy. He wakes her but is unable to heal her as she is extremely weak. Sam is captured by Holloway at the same time that Dean bella and Claire realize he is one of theGrigori, a group of angels that prey upon humans. Holloway, revealing himself asTamiel, tells Sam that he's been hiding on Earth from the other angels by feeding on human souls since the beginning, seeing both angels and humans as beneath him. Afterwards, Dean, Sam bella , Castiel and Claire come to Amelia's rescue, but are unable to defeat Tamiel. Amelia sacrifices herself to save Claire, who then kills Tamiel with his own sword in revenge. Amelia is reunited with her husband Jimmy inHeavenwhile the Winchesters decide to send Claire to Jody until she can get on her feet. Claire finally forgives Dean and Castiel for their roles in her father's death and Dean leaves her with a lore book as a gift, as he realizes she is intending to become a hunter