Batman. Earth-1. Book 3

Many criminal gangs appear in Gotham, armed with the latest military technology.

Street thugs claim that their weapons are supplied by none other than Harvey Dent, the former district attorney. However, Harvey was killed a month ago…

Batman starts an investigation, intending to identify the real culprit behind the events.
However, now he is assisted not only by Alfred. The Dark Knight is setting up a real intelligence network, which includes Jim Gordon, Killer Croc, and Catwoman.

Meanwhile, a mysterious old man arrives at one of Gotham's psychiatric clinics. And everything indicates that he is Adrian Arkham – Bruce Wayne's grandfather, long thought to be dead…