The Flash (1987-2008) #192

Run Riot' part 1! Gorilla Grodd explodes out of his prison cell, but he's still trapped in Iron Heights—along with some of the worst villains in the DCU, including Dr. Alchemy, Peek-a-Boo, Tar Pit, and Double Down. It's a riot that the Flash might not be able to contain before it gets even worse!