"Hush, Chapter 7 of 12: The Joke"
*Tommy Elliot is lying dead at the Joker's feet, and Batman finally cracks and despite Joker's protestations of innocence, is sorely tempted to kill him for his many crimes. But due to Catwoman and James Gordon's influence, he realizes that he is right not to have killed him before and not to kill him now, no matter how many lives he has ruined and how much pain he has caused him. *Source: DCUGuide.com