In the presence of evil

"Paris, 1393. Scribe Christine de Pizan dreads going to the palace to work, where people believe the mad king can be cured with magic. But a certain spell book leaves murdered bodies in its wake. Then Hugues de Precy is murdered and his wife, Alix, is blamed. Can Christine prove Alix's innocence and save her from being burned at the stake?"--Publisher's description.