Batman : Dark Victory

Enhanced descriptions from Syndetics:

In this sequel to the legendary Batman: The Long Halloween , another mystery killer has sprouted in Gotham City, but it's not the town we all quite knew.

Once a place controlled by organized crime, Gotham City suddenly finds itself being run by lawless freaks, such as Poison Ivy, Mr. Freeze, and the Joker. It is still early in Batman's crimefighting career, but the Dark Knight is on the verge of completing his transformation into the city's greatest defender. However, nothing he has experienced thus far--not even a new sidekick named Robin--will prepare him for the Hangman.

With the murders reminiscent of the Holiday killing spree just a year ago, Batman will have to call on every one of his detective's instincts to solve a mystery that goes even deeper--and more dangerous--than any he's faced before.

From the juggernaut creative team of Jeph Loeb and Tim Sales comes Batman: Dark Victory , one of the finest stories in the Dark Knight's fabled lore. Collects issues #0-13.