All Star Batman (Rebirth) Vol 3 First Ally
When the Dark Knight is taken down by a new enemy whose attacks he cannot counter, Batman uncovers a plot spanning generations...whose mastermind might be one of his closest allies! But who is the First Ally? And as painful secrets from the past are revealed, Batman must face down a nemesis unlike any he's seen before-or risk the horrific consequences of the Genesis Engine falling into the wrong hands! Collects issues #10-14!