Written by BRYAN Q. MILLER Art by LEE GARBETT & JONATHAN GLAPION Cover by STANLEY 'ARTGERM' LAU In part 3 of 'The Flood,' Oracle faces off against the Calculator, while Batgirl is forced to team up with the Calculator's daughter in an attempt to save the citizens of Gotham City from a crippling techno-plague. But who will save Batgirl from an infected and rampaging Man-Bat?.