Changes

Chuck reappears to help Sam, Dean, and Castiel deal with the Jack situation. After revealing that he heard Castiel's [[prayer]], Chuck undoes the chaos caused by Jack after transporting everyone back to the Bunker. There he reveals that Jack is a "Me level" problem that needs to be dealt with and creates a [[The Equalizer|handgun]] He claims can kill anything, with at the catch cost of killing the user also diesshooter. While Sam, Dean and Castiel debate to do with Jack, Sam finds Chuck playing with the [[archangel blade]]. Sam goes on to confront Chuck about Michael's claim that He creates and abandons [[alternate universe]]'s as failed drafts, and asks if He is doing the same to them. Chuck assures Sam that he isn't and that they are His "favorite show".

Realizing that Chuck is afraid of Jack, Chuck admits as much to Sam, revealing that Dean had already left to go and kill him. As Sam races to stop Dean from shooting Jack and killing himself, Chuck teleports into the cemetery to watch, his enjoyment of the scene playing out catches Sam's eye. But when Dean refuses to kill Jack, Chuck becomes agitated that Dean is going against the story, going so far as to offer to bring Mary back if he shoots Jack. Sam reveals to Dean how Chuck had been manipulating them their whole lives as part of some sick story. Angry at the revelation, Dean steadfastly refuses to kill Jack, telling Chuck to go to Hell. Frustrated, Chuck takes things into his own hands and snaps his fingers, smiting Jack. As he attempts to walk away, Sam picks up the Equalizer and shoots Chuck in the shoulder, injuring himselfand causing not real harm to Chuck. Having had enough, he relents to the Winchester's wishes and declares the story over, welcoming them to "the End". As Chuck teleported away, day became night and a doorway to Hell opened up in the cemetery, unleashing the souls of the damned, into the worldand raising a horde of zombies to kill the Winchesters.