1348.As the Black Plague ravages Italy, Ginevra di Gasparo is summoned to Florence after nearly a decade of lonely exile. Ginevra has a giftharnessing the hidden powers of gemstones, she can heal the sick. But when word spread of her unusual abilities, she was condemned as a witch and banished. Now the same men who expelled Ginevra are begging for her return.

Ginevra obliges, assuming the citys leaders are finally ready to accept her unorthodox cures amid a pandemic. But upon arrival, she is tasked with a much different mission: she must use her collection of jewels to track down a ruthless thief who is ransacking Florences churches for priceless relicsthe citys only hope for protection. If she succeeds, shell be a recognized physician and never accused of witchcraft again.

But as her investigation progresses, Ginevra discovers shes merely a pawn in a much larger scheme than the one shes been hired to solve. And the dangerous men behind this conspiracy wont think twice about killing a stone witch to get what they want