"Hush, Chapter 8 of 12: The Dead"
*Following Tommy Elliot's funeral, Batman realizes that his friend's death was part of a grander scheme which has already involved Killer Croc, Poison Ivy, Catwoman and Superman - the Joker really is innocent of the shooting. Nightwing notices that Batman is happy about something, and surmises that the rumor that he and Catwoman are an item is true. He tells Batman that he should tell Catwoman about his alter ego, to bring her closer, advice which Batman takes after he and Nightwing bring in the Riddler. At first it seemed as though the Riddler wasn't part of the grander scheme, but ash from a lazarus pit is found in his truck. And Harvey Dent, healed of the scars that made him Two-Face, visits the Joker in Arkham. *Source: DCUGuide.com