Shredder's Assassins

Leo has defected Shredder and the foot. Now Shredder has put Leo and his new family on a hit list. A small group of mutant assassins come to New York to target and kill the turtles. Will Leo be able to protect his loved ones and keep himself alive while dealing with his past cohorts? Sequel to Shredder's shadow. Can be read as a standalone. Don't own the turtles or the cover picture.