Christine de Pizan is in danger when she is sent to the Priory of Poissy to catch the killer of a young nun in this vividly imagined historical mystery set in fourteenth-century France.

Paris, 1399. Scribe Christine de Pizan is sent to the Priory of Poissy by the palace to copy a manuscript for the prioress. But the prioress already has many copyists, and Christine senses that something is amiss.

Her suspicions are confirmed when the prioress reveals that one of the sisters has been found murdered in the cloister. Fearing for the welfare of the king's young daughter who resides at the abbey, she is eager for Christine to find out who killed the young nun - and why.

As Christine investigates, she uncovers dark mischief and closely guarded secrets, but can she unmask a killer?