"The Joker is dead. There is no doubt about that. But whether Batman finally snapped his scrawny neck or some other sinister force in Gotham City did the deed is still a mystery. Problem is, Batman can't remember... and the more he digs into this labyrinthine case, the more he starts to doubt everything he's uncovering. So who better to set him straight than... John Constantine? The problem with that is as much as John loves a good mystery, he loves...