Dick Raynes feared this day would come. Otis Parsons, a violent felon, has been released from prison, and Dick’s sister, Dee, is the one who helped put him there. Dick’s marriage is over, and his career is in shambles, so with nothing to lose, he sets out to do whatever it takes to keep Dee and her son safe. But Otis is just the beginning. Using his knowledge as a scientist to develop a formula able to predict those offenders most likely to strike again, he sets out to protect future victims the law is powerless to defend. FBI agent Steve Patterson investigates crimes against those who have paid their dues for past mistakes, running a department he created after his son was killed by a vigilante mother who targeted the wrong person. Recognizing a disturbing pattern of untimely deaths in recently released felons, he sets out to discover who’s behind it. What he doesn’t expect is to find another chance at love—with the sister of the man he is chasing. Dick’s sense of right and wrong is tested as he pursues and neutralizes the most dangerous threats, while Steve makes it his mission to stop this vigilante serial killer before he is labeled a hero. Both men pursue a noble cause, but only one can prevail.