The Joker by James Tynion IV Compendium

"Arkham Asylum has been attacked. All eyes are on the Joker. A mysterious benefactor hires former Gotham City Police Commissioner Jim Gordon to go on a global manhunt to catch, and possibly even kill, the Clown Prince of Crime. But nothing with the Joker comes easy. What Gordon finds and what the Joker wants him to see will change his perspective on the world forever. And he's not the only one who wants the Joker found"--