The "Cahill Witch Chronicles" is a young adult fantasy series written by Jessica Spotswood. It follows the lives of three sisters—Cate, Maura, and Fen—who are witches living in an alternate version of 1890s New England. The story explores themes of sisterhood, magic, and the struggle against societal expectations, particularly regarding women's roles. The series begins with "Born Wicked," where the sisters must navigate their magical abilities while facing the oppressive Brotherhood, a group that seeks to control witches. As the plot unfolds, the sisters confront their destinies, uncover family secrets, and fight for their freedom in a world that fears their powers.