About the Book: Ista Flit and her friends journey to the eerie Glass Island in search of her missing father. There, a monstrous creature lurks, and the islanders are entranced by the magical marsh spinners.To uncover the truth, they must brave the spinners’ court and resist its dangerous allure.Armed with courage and Tidemagic, the trio faces their greatest test yet. Will they rescue Ista’s father—or be lost to the spinners’ haunting song forever?