He was a cop. Crossed a line

James Gordon:
He waited for him at the gym. Pete always liked to work out late at night, when no one else was around. Batman:
There's a needle mark on his neck. James Gordon:
Injected him with arsenic. Batman:
Rat poison. James Gordon:
Yeah. That seems to be his theme here. Look at this thing. Batman:
It's a maze. James Gordon:
What kind of demented son of a bitch does this to a person? Batman:
[giving the maze a once-over with a blacklight]
More symbols. It's another cipher. James Gordon:
[looking through surveillance photos]
He blasted these out after his message went viral. Bastard murders you and your reputation. Batman:
That guy pushes drops. On the east end. James Gordon:
I don't get it. Why would Pete get involved in something like this? Batman:
Looks like he got greedy. James Gordon:
You kidding me? After everything we did to take down the Maronis? We busted their entire operation, then he caves to some lowlife dealer? Batman:
Maybe he's not who you thought. James Gordon:
You make it sound like he had it coming. Batman:
He was a cop. Crossed a line