Season 2

As the season second begins, Dean is unconscious due to several injuries caused by Demon’s torture and Car accident. John makes a deal with the demon and trades his life for Dean’s. John tells something to Dean before dying which no other one is knowledge about. Dean reveals to Sam that their dad had told him that he had to save Sam or be forced to kill him. In San Francisco, they meet a young woman named Madison. Sam sleep with Madison and when he finds out that she is the werewolf, Sam is the one who kills her. In the season finale, Dean makes a deal with the demon and offers his life for Sam’s.