Chased through workshops and cathedrals, across the Duomo's dizzying heights and into the water-black vaults beneath the Ponte Vecchio, Lia teams with a streetwise thief and a disillusioned Medici agent. Each clue unlocks another, each choice costs more than the last. To save the words that make a civilization-and the people she loves-Lia must risk becoming a heretic in a city that has forgotten how to breathe.