Beautiful cover for the second last issue of Detective Comics, 880 (Late Sept. 11), for the story by Snyder and Jock.
Barbara Gordon, the ex-wife of Commissioner Gordon, not the daughter, gets attacked doused with Joker toxin. She has been appearing in Birds of Prey, but hasn’t been seen, or even much talked about, since Batman: Year One, and occasional flashbacks to those events.
Batman has little trouble tracking, and taking down, the Joker. Likely because the series was coming to an end and there wasn’t much time. The Joker quickly convinces Batman that he was not the one who attacked Barbara.
Nope, it was her psycho son, who shows up at Barbara Gordon’s place for a exceptionally well done final page.
The story, and the series, conclude next issue.