War had killed 'Glint' McClain's taste for gunfighting. Perhaps that is why a young hardcase could best the famous gunman and leave him for dead on the parched ground of the Arizona desert. Father Miguel finds McClain and nurses him back to health. To repay this kindness, McClain agrees to fight off the Lathrops, local mine owners who are enslaving the Indians in Miguel's parish.
Yet despite his Good Samaritan ways, the townspeople want Father Miguel dead—he brings nothing but trouble, they say. And now, the Indians fear him too. Is Father Miguel a man of God or Father Diablo, a lying cheating scoundrel? McClain must take the measure of his savior, before he can take aim at the true enemy.