Batman's ultimate mirror image—Man-Bat—is shown in this mind-bending collection! For years Kirk Langstrom has struggled keeping himself under control. The serum that transformed him into a monstrous alter ego...Man-Bat. But what happens when he finally hits rockbottom...after the most devastating setback he's ever experienced...will he still try to control the beast inside? When he unleashes his anger on every citizen of Gotham—will the combined might of Batman and the GCPD be enough to stop Langstrom once and for all? Or is Man-Bat's devastating reign just starting? Collects Man-Bat #1-5