Gotham central. Book three. On the freak beat

"A brutal gang war wages in Gotham City. After a tragic mistake, the police feel that they can no longer trust Batman, so the commissioner makes a fateful decision; the Dark Knight is now a wanted man, and the famous Bat-Signal is removed from the roof of headquarters. But it couldn't have come at a worse time, as the Major Crimes Unit has to face a super-villain they've never dealt with before, and a good cop's life hangs in the balance"--P. [4] of cover.