As Dean spends time with Jack, takes him out to teach him to drive, he tries not to think of that time when Jack first came into their lives and Dean had thought they were better off ending him.

Who was Dean, after all, to play God and make that decision, especially now that Jack had become a part of his life and Dean could see that he was nothing like Lucifer?

He thinks back to himself as a demon, and as Michael's vessel, and Soulless Sam, Castiel as God, and wonders which of them was truly the monster.