Billy Hawkins learns at a young age that his complement of human attributes is incomplete. After consciously making the decision to eliminate the man who has been physically abusing his mother, Billy finds within himself the degree of moral flexibility needed to successfully carry out the execution. During his second year at Rice University, Billy finds a second application for his unique traits. When Billy witnesses his childhood sweetheart and soul mate being attacked by a campus rapist, he unflinchingly applies deadly force to the assailant-feeling no remorse. Billy then decides to alter his education plans to facilitate a demonstration for the Catholic Church concerning its misguided defense of priests guilty of child sex abuse. Although his main goal is to convince the church hierarchy to revise its methods of selecting priest candidates, Billy presents an object lesson by assassinating priests who are known child predators sheltered by the church bureaucracy. After a substantial hit of ten American priests on a sex tour in Mexico, a joint FBI-police task force is formed to put an end to Billy's crusade. The skills and dedication of a crusty Seattle police sergeant and a young female FBI agent combine in an effort to trap the unknown slayer of priests in what they hope to be a final episode.