>>116996381I can't really remember Orlando's run that much. But Marc Andreyko's run is also good and I guess a good jumping on point. It's spawns from Bendis "The Man of Steel" mini.
Supergirl Vol. 1: The killers of Krypton
#21-26
Supergirl Vol. 2: Sins of the Circle
#27-33
Issue 34 and 35 were Leviathan related and the last issues of Andreyko's run. It's seems(imo) it got cut short because of the Batman Who Laughs Infected plot.