Batman [Bruce Wayne] (flashback); The Joker (flashback); Dr. Tobias Wear; Deb Donovan; Mayor Christopher Nakano; Koyuki Nakano; Nero XIX [Roy Dowd]; Dr. Chase Meridan; Batwoman [Kate Kane]; the Party Crashers; Ana Vulsion; Sergeant Timmins; Oracle [Barbara Gordon]; Batgirl [Cassandra Cain]; Nightwing [Dick Grayson]; Huntress [Helena Bertinelli]; Two-Face (image); Penguin (image)
Synopsis
The new Arkham Tower opens and shows some early success with rehabilitating patients, however it doesn't take long before a violent situation occurs.