Batman #565 (1940-2011) (NOOK Comic with Zoom View)

"No Man's Land" part 11 and "Mosaic" part 1! Black Mask has gone over the edge and altered his M.O. Now leading a cult of self-mutilated crazies and trying to take over the city, Batman and Batgirl are all that stand in his way. Continued in DETECTIVE COMICS (1937-2011) #732.