A riot in the Slab has led to total chaos. The Joker has taken control of the joint, and Black Canary's the lone hero trapped within its impregnable walls. Batman and Nightwing enter the fray, but the Joker's ready for them!

Written By: Chuck Dixon Scott Beatty Pencils: Marcos Martin Inks: Mark Farmer Alvaro Lopez Cover By: Nathan Eyring Brian Bolland Klaus Janson Scott McDaniel