Hereaux's Hell by Steve Dycus

Terry Wayne Hereaux did his duty when he shot an inmate escaping a Tennessee prison. Then his life descended into a dark chaos. His own existence became an open-air penitentiary. A penitentiary he was afraid to walk away from lest he face the realities he'd incarcerated himself to avoid. The inmate he'd shot in the real world survived and escaped, Hereaux could not. A decade later, however, the escapee resurfaces and Terry Wayne Hereaux knows he can end his own torment by completing the task at which he'd failed over ten years before. Ten years in which a monster had walked free and caused so much pain.

Two men are trying to rectify the past in a world that has tried to leave them both behind. One wants a life, one needs a death.