Written by DAVID HINE
Art by SCOTT MCDANIEL and ANDY OWENS
Cover by PETER NGUYEN
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.