(W) Doug Moench & Various (A) Mike Manley & Various (CA) Graham Nolan, Scott Hanna The Dark Knight stories tying into ZERO HOUR are now collected in their entirety. Time is collapsing upon itself! The villainous Extant has ushered in a series of black holes that are swallowing the universe, past, present and future! And like everyone else in the DC Universe, the Bat-family has seen time loops affect their lives. The result? The return of Barbara Gordon, Batgirl! Collects BATMAN #0 and 511, BATMAN: SHADOW OF THE BAT #0 and 31, DETECTIVE COMICS #0 and 678, CATWOMAN #0 and 14, BATMAN: LEGENDS OF THE DARK KNIGHT #0 and ROBIN #0 and 10.