Quest Set: Oracle At Gotham
Babs Begins: 4 (of 4)
http://www.comicvine.com/detective-comics-the-million-dollar-debut-of-batgirl/37-112609/
Missing The Punchline
http://www.comicvine.com/batman-the-killing-joke-the-killing-joke/37-119383/
End Of The Line?
http://www.comicvine.com/birds-of-prey-the-death-of-oracle-part-one-of-four-the-cape-and-the-cadaver/37-249175/