"Arkham City: an entire section of Gotham given over to the crimals and the insane -- a place where they can develop their own society freely, no matter how chaotic. Sensing unseen players manipulating events to unknown ends, the World's Greatest Detective infiltrates the privately run prison city. Smashing his way through the gathering armies of the Penguin, Two-Face, and even a recovering Joker, he'll either unravel the secret the mayor's hiding, or watch the entire city be swallowed whole by the strange days ahead"--Page 4 of cover.