(W) Devin Grayson (A) Rick Leonardi (CA) Dave Johnson. Written by Devin Grayson; ART by Rick Leonardi and Jesse Delperdang; COVER by Dave Johnson Nightwing scrambles to find the source of a madness that's gripping the Bl dhaven Police Department. Bl dhaven's Finest aren't just lapsing into a murderous mania - they're also exhibiting superhuman strength and speed. Can Nightwing stop the madness before it rips his city apart? FC* 32 pg