Genesis Game - The Fall, #4

Kell McDonald believed his fight was over. A year after settling with his closest friends in a secluded community, his research into a cure for the plague that ended the world has ground to a halt. When news arrives pointing toward a potential breakthrough, Kell doesn't hesitate. The key to solving the riddle of the Chimera plague might rest in the cells of a small group of people. Unfortunately, he isn't the only one looking for them.