Batman: The Dark Knight Detective Vol. 8

The Dark Knight's greatest enemies have all simultaneously escaped from Arkham Asylum and are preying on Gotham City.

The Dark Knight's deadliest enemies have escaped Arkham Asylum! The Joker, Two-Face, the Mad Hatter, the Riddler, Poison Ivy, Scarecrow, Killer Croc, Firefly, and Zsasz--one by one, Batman must face them in mortal combat. But lurking at the end of this seemingly endless gauntlet is the deadliest menace of all--a mysterious man-mountain known as Bane who has one goal: to break the Bat! 

Batman: Knightfall Omnibus Vol. 1 includes the bestselling storyline from Batman #484-500, Batman: Shadow of the Bat #16-18, Batman: Vengeance of Bane #1, Detective Comics #654-666, and Showcase '93 #7-8.