Batman: Gotham Knights #13 (2001)

It has been two weeks since James Gordon was shot by Jordan Reynolds aka Officer Rich, a man whose life had been destroyed after Gordon had arrested him many years ago. He is out of hospital, walking with the use of a cane, and has made a very difficult decision - he is to retire. He speaks to the Mayor about it, then goes to speak to the GCPD Major Crimes Unit personally, to explain and to say goodbye They do not take it very well, particularly Harvey Bullock and even more so Renee Montoya, who blames herself for their inability to prove that Reynolds was the man responsible. Before he goes, Gordon introduces the new Commissioner, Michael Akins, to the Batman, but the meeting does not go well, as Batman does not agree with Gordon's decision and is angered that his old friend did not speak to him about it beforehand (though Gordon does point out that it's not exactly easy to contact Batman). Soon afterwards, Montoya calls in sick, and Bullock suspects he knows where she's gone - to Rich's apartment to make him pay for what he did to the Commissioner. He stops her from shooting the man, but threatens him himself as he leaves. Stacy helps the former Commissioner move his things out of police headquarters, and later Gordon and Batman have a more reasonable talk, where the Dark Knight is persuaded to give Akins a chance. Still later, Jordan Rich's apartment stands empty, with a bloodstain on the floor...