A juvenile delinquent and bully as a child, Kenneth Allen McDuff was a notorious criminal by the age of 19. In August 1966, while on parole for burglary, he raped, tortured, and murdered three teenagers in an abandoned field far from his hometown of Rosebud, a peaceful Central Texas hamlet. He was tried, convicted, and condemned to death. Had his sentence not been commuted to life, that would have been the end of Kenneth Allen McDuff. But in 1989,...