Gotham City is plagued by villains but it seems one person is using them merely as pawns. Batman and Robin take the challenge and their first steps into a string of cryptic crimes.
The Crown Jewels have been stolen. A familiar feline is the suspect but who's pulling her strings? Bruce Wayne packs the cape and cowl and travels to London to investigate.
Penguin's fed himself too fat. He's gorged for long enough on Gotham's illegal bounty. Batman and Robin have been tracking a twisted trail and it has led them to the front door of Cobblepot's vulgar club. Knock, knock, Cobblepot.
They've all been pawns: The Mayor, Catwoman, Penguin; each controlled from the depths of a labyrinth that is The Riddler. Edward Nygma reaches out to move his final piece - Batman.
The Clown Prince of Crime is carving chaos into the city. But how did he escape? And who is this colorful vixen at his side? Batman digs through asylum video footage and therapy sessions, descending into the very merry minds of malice.
Harley Quinn struggles endlessly to win the Jokers favor; that means Gotham becomes her gauntlet and the citizens her obstacle. Can the Dynamic Duo stop Harley Quinn's transition from escapee to murderer?
Joker is near death. Robin has been shot. Harley Quinn has disappeared. Batman's allies question his sanity. It's a delicate time; a time to heal. It is not time for a new terrorist to start bombing a campaign across the city.
The Mad Bomber attacks Simon Stagg unopposed. The city burns as collateral damage. With Robin still mending from a gunshot wound, Batman enlists the unlikely aid of a ghost from his childhood.