The Dark Knight: Batman UndercoverPaperback, 1 January 2013

The Cosmic Obliterator, a doomsday weapon capable of destroying entire planets, has gone missing! BATMAN is on the case, but so far the only clue is a ticket to the Super-Villain Crime Convention. That's one place the DARK KNIGHT can't go . . . so he decides to attend as the mobster, MATCHES MALONE, instead.