The legendary Catherine de Medici was considered by her contemporaries and descendants to be a sophisticated political intriguer, sorceress and poisoner. But there was absolutely no evidence, and the Dark Queen continued to decide the fate of the world and control the lives of her subjects. The only creature that can resist her turns out to be Arianne Shenet, a hereditary witch, one of the Sisters of the Earth. But she also needs help - and finds it in the person of the mysterious Count de Renard.

The confrontation between two powerful women is growing.