Guest-starring Nightwing as a carjacker? What could lead him to such a dastardy deed? Why, Harley Quinn, of course. How will our hero, er, villain escape this one? Meanwhile, Oracle is determined to stop Harley once and for all, and she's not the only one. Nix and Buster are scheming against her, Matches Malone is about to strike, and let's not even talk about the Stooges. This story builds towards our catastrophic, oversized 12th issue - so don't miss this action-filled prelude.