Batgirl #19

Written by BRYAN Q. MILLER Art by DUSTIN NGUYEN & DEREK FRIDOLFS Cover by DUSTIN NGUYEN Patience may be a virtue, but can Batgirl stand still long enough to stop a super-speedster foe? 'The Lesson' continues as the mysterious Order of the Scythe unleashes its first weapon in their war on Batgirl - Slipstream!