In some games, winning means losing everything that matters. In the opulent world of the Swedish royal court, Jacquette Gyldenstolpe walks a dangerous tightrope between romance and political intrigue. Neglected by her parents and ostracized by the people around her, the young countess falls in love with Prince Oscar, heir to the Swedish throne-but their passionate affair has far-reaching consequences for the new Bernadotte dynasty, which is already challenged by threats from inside Sweden and beyond. By the time Jacquette learns that the Butterfly Game is not for the faint-hearted, it is too late. For she has a secret-one as precious to her as it is potentially devastating to the crown-and she will stop at nothing to protect it.