Plot
Collects Batman (1940-2011) #0 and 511, Batman: Shadow of the Bat (1992-2000) #0 and 31, Detective Comics (1937-2011 1st Series) #0 and 678, Catwoman (1993-2001 2nd Series) #0 and 14, Batman: Legends of the Dark Knight (1989-2007) #0 and Robin (1993-2009) #0 and 10.
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!