"Fetter was raised to kill, honed as a knife to cut down his sainted father. This gave him plenty to talk about in therapy. He walked among invisible powers: devils and anti-gods that mock the mortal form. He learned a lethal catechism, lost his shadow, and gained a habit for secrecy. After a blood-soaked childhood, Fetter escaped his rural hometown for the big city, and fell into a broader world where divine destinies are a dime a dozen. Everything...