In this gripping finale to Christelle Dabos's international best-selling Mirror Visitor saga, the mirror-traveling heroine Ophelia and her husband Thorn discover that the truth they have been seeking has always been hidden behind the mirror. Ophelia and Thorn, at the center of a great universal game in which the stakes are life and death, arrive at the observatory of the Deviations, an institute shrouded in absolute secrecy and overseen by a sect of mystical scientists who secretly conduct terrifying experiments. There, Ophelia and Thorn hope to put a stop to the destruction and death and bring balance and harmony to their world. "A hallucinatory marriage of Pride and Prejudice and A Game of Thrones."--Matthew Skelton, author of the Endymion Spring books