This is the 30-years-in-coming sequel to Walter M. Miller's seminal work, "A Canticle for Leibowitz". It chronicles the odyssey of Brother Blacktooth St. George, a fallen monk of the Leibowitz order who becomes secretary to the politically ambitious Cardinal Brownpony. Brownpony is involved in a complex scheme to break the rule of the Hannegan Empire, which dominates the 35th-century's post-apocalypse world. Even though Brownpony's plans will ultimately restore both the world and the declining Papacy to some form of order, he is not a religious man, although he is drawn to those who are. He sees something profoundly religious in Blacktooth, who on the surface seems to be a disgraced monk foundering in confusion because of his love for a woman, his semi-pagan visions of the Virgin Mary, and his nomadic heritage. Ultimately it seems that Brownpony's--and indeed humanity's--salvation may lie with Blacktooth, who will never quite realize how great is the gift he's been given.