Remember how E.D. Caldwell came to Gotham, and provided the GCPD with new body armor in a time where the Wrath was assassinating cops, only for Caldwell to be the Wrath and the body armor to be booby trapped with electrical charges strong enough to kill people after prolonged exposure? Yeah,
With the Wrath having temporarily retreated, Bruce meets Alfred in Caldwell's war bunker, and Alfred has found some interesting info on Caldwell, that he had kept hidden. Turns out Caldwell's father was apparently crook who stole some diamonds, and was shot and killed by some crook cops, but the diamonds were never found... so there you go, Caldwell doesn't like cops. Knowing that Wrath is far from done, Bruce comes up with a plan to stop him once and for all.
A short time later, Wrath shows up to the largest Gotham precinct with a giant tank, and blows the front wall clean off. Too bad that Batman had convinced Gordon to evacuate the building, and was waiting for Wrath in an armored suit of his own, then proceeds to kick the Wrath's ass.
When Wrath asks Batman where his justice is, Bruce decides to show him. Knowing that Gordon and the GCPD wouldn't have sat this one out, Bruce throws Wrath outside, where they're waiting, needing "the win." So (knowing Wrath's suit can take it) Gordon orders one of his men to open fire with the energy tank on him. With Wrath defeated, Bruce rubs some salt in that wound, telling him that Gordon was the man who took down the crooked cops that killed his father, because JUSTICE! Finally, before Bruce leaves the scene, the cop who has shown up here and there talking mad shit about him gives a long winded apology, saying that maybe the bats aren't so bad...
Well there are some bad bats, as a bunch of them swarm some dude and a leave nothing behind!
Days later in Blackgate, Gordon is showing Caldwell the case on his father, having reopened it and cleared his name. The gesture is lost on Caldwell, who still is transported back to his cell, where across the way, Ogilvy starts talking to him, noticing he has some big plans, and suggesting that they should talk.