1348. As the Black Plague lays waste to Italy, Ginevra di Gasparo is summoned back to Florence after nearly a decade of lonely exile. She was banished under accusations of witchcraft, but the same men who sent her away now beg her return and heal the sick using the ancient practices of alchemy she learned as a young girl. In Florence, she finds herself assigned to a much more dangerous mission: she must use her collection of jewels to track down a ruthless thief who is ransacking churches for priceless relics. If she succeeds, she’ll be a recognized physician, never accused of witchcraft again—but to achieve that goal, she must survive as a pawn in a dangerous game…