In the depths of the Utah desert, long after the Flame Deluge has scoured the earth clean, a monk of the Order of Saint Leibowitz has made a miraculous discovery: holy relics from the life of the great saint himself, including the blessed blueprint, the sacred shopping list, and the hallowed shrine of the Fallout Shelter. In a terrifying age of darkness and decay, these artifacts could be the keys to mankind`s salvation. But as the mystery at the core of this groundbreaking novel unfolds, it is the search itself - for meaning, for truth, for love--that offers hope for humanity`s rebirth from the ashes.