Batman: Killing Time #5B

The heist of the century has gone so far sideways that an all-out and very bloody gang war is imminent, with Batman, Riddler, and Catwoman caught in the crossfire. What is the mysterious object that so many are willing to murder so many for, and how does it connect to Bruce Wayne? As we reach the climax of this thrilling series, the clock strikes its deadly hour-the time for killing is here!