Written by Scott Snyder, James Tynion IV and Ed Brisson. Art by Scot Eaton and Wayne Faucher. Cover by Tony S. Daniel. Everything that can go wrong does in both the past and the present! Batman spent years believing Mother was dead…and when you see their blood-soaked confrontation, you'll know why! Now that she's returned in the modern day, Batman's allies will find themselves under siege from a world-destroying weapon they never saw coming! And on top of everything…Harper Row learns a devastating secret that will change her life forever-and potentially make her the most dangerous foe the Robins have ever faced!