Issue: #1
A variation of The Joker drug is causing users to suffer violent mental breakdowns. Now, the citizens of Gotham City are divided into two gangs: one led by a Batman impostor who pledges to bring law back to the streets, the other led by a Joker look-alike out to punish the innocent. Collected from DETECTIVE COMICS #867-891.
Creators: Todd Klein, Allen Passalaqua, David Hine, Guy Major, David Baron, Andy Owens, Scott McDaniel, Peter Nguyen
Characters: Batman, Alfred Pennyworth, Dick Grayson, Joker, Harvey Bullock, Renee Montoya, James Gordon, Barbara Gordon, Mayor Hady, Winslow Heath
Story arcs: Impostors