With more than thirty fires raging out of control across the city, Gotham is indeed a hell on earth. But torching the population is small potatoes for the arsonist extraordinaire known as Enfer. The pyromaniac's mad masterpiece is Arkham Asylum, blazing like a Roman candle and engineered to provide the perfect escape for Arkham's most infamous inmate, the Joker. But the dire situation goes from bad to beyond monstrous when the archvillain's path to freedom leads directly to the Dark Knight's cave.

The Joker believes in striking while the iron is hot . . . and now it's never been hotter. After all, the diabolical villain has devised the ultimate joke: launch the mother of all crime waves, masquerading as the Caped Crusader himself! With Gotham erupting in flames and its #1 crime fighter fast becoming its #1 enemy, the burning question is: Who's going to get the last laugh?