Mary lives in colonial Massachusetts and her primary concern is making sure the Puritans don't find out she's a witch. But when the lives of her friends are threatened, she is drawn into a clash between the Old World and the New, and must risk her own safety to find answers.

One of the first European witches to travel to the New World finds her niche as a tutor among the Puritan colonists. But when two of her students go missing she drops everything to find them.