City at War — Michael Teitelbaum

For years the Ninja Turtles hoped to rid the world of Shredder's terror. Now with Shredder out of the picture, everything should be just fine — but it's not. The chaotic remains of Shredder's Foot Ninjas, the Purple Dragons, and the New York mobsters have erupted into a full-blown war for control of the New York underworld. The Turtles do what they can to stop the fighting...but could they be in over their heads?