Everyone at Hogwarts knows Theodore Nott and Violette Valcœur are hopelessly obsessed with each other—except them. When Violette’s younger cousin, Evelina, transfers to Hogwarts, admiration quickly turns into obsession as she begins copying Violette’s appearance, personality, friendships, and eventually her feelings for Theodore. But the more Evelina tries to become Violette, the more obvious it becomes that some things can’t be imitated—especially the girl Theodore has been in love with all along.