This collection includes the issue #620-622 of the 1940 Batman series.
#620 - "Broken City!" part 1 of 6. A dead girl's body is found in a Gotham Landfill, and the discovery sends Batman on a journey of self-examination that pits him against the Joker, Killer Croc and more!
#621 - Part 2 of the 6-part "Broken City" by the creative team of 100 BULLETS! Batman continues the hunt for the man who killed a boy's parents in Gotham's underground, with the help of GOTHAM CENTRAL's Detective Crispin Allen. But as luck would have it, the Dark Knight runs into a little problem. Little problems in Gotham? Fat chance.
#622 - A pair of deadly new villains make their raucous debut as the Dark Knight stalks the streets of his "Broken City" in search of a murderer! It all goes down in BATMAN #622, by the award-winning 100 BULLETS creative team of writer Brian Azzarello, artist Eduardo Risso and cover artist Dave Johnson! In Part 3 of the 6-part "Broken City," the hunt for murderer Angel Martinez continues...but the closer Batman gets to him, the more his own dark past comes into focus! And with a little help from his old "friends" The Penguin and Scarface, Batman's troubles are going to get worse before they get better.