"Prophecy of the Sisters" is a young adult fantasy novel by Michelle Zink that tells the story of twin sisters Lia and Alice, who are descended from a long line of powerful women with a sacred duty to prevent a prophesied apocalypse. When their father dies, Lia begins to experience strange and disturbing visions that hint at her destiny as the "key" to unlocking the prophecy. Meanwhile, Alice becomes increasingly distant and manipulative, as she succumbs to dark forces that threaten to destroy them all. Lia must navigate a complex web of family secrets, supernatural powers, and political intrigue, as she races against time to uncover the truth about the prophecy and her own role in it. Along the way, she discovers unlikely allies and confronts dangerous enemies, including the mysterious and seductive demon Samael. "Prophecy of the Sisters" is a gripping and suspenseful tale of mystery, magic, and sisterhood that will keep readers on the edge of their seats.