Batman Zero Hour

The Batman tie-in tales to the epic ZERO HOUR storyline
are now finally collected into one graphic novel in BATMAN: ZERO HOUR!
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! The
Bat-family, like everyone else in the DC Universe, has seen time loops affect
their lives. The result? The return of Barbara Gordon, Batgirl! The Dark Knight
stories tying into the classic ZERO HOUR event are now available in their
entirety. Collects BATMAN #0, #511, BATMAN: SHADOW OF THE BAT #0, #31, DETECTIVE
COMICS #0, #678, CATWOMAN #0, #74, BATMAN: LEGENDS OF THE DARK KNIGHT #0 and
ROBIN #0, #10.