Aaron Birch's brother, Christopher, was murdered by three police officers who then planted a gun on him to avoid prosecution. Aaron prays to God that they be punished, but it is an Angel who answers his prayers. He trades his soul for a piece of the Staff of Moses, which he uses to kill the three police officers. Sam, Dean, and Castiel take the staff from him, and Castiel performs a reading on him to determine the name of the angel who he made his deal with: Balthazar. The reading is very painful, though Castiel says permanent physical damage will be minimal. Sam, Dean, and Castiel leave him unconscious in a motel room for the police to find. Sam and Dean later force Balthazar to relinquish his claim on Aaron's soul.