But just like in a fairy tale, a princess comes to her rescue: the beautiful, exotic Anna Volkonskaya. Over a river of ice in a horse-drawn sleigh, she brings Sophie and her friends to a magnificent, if weathered, winter palace.At first, Sophie is enchanted by Princess Anna's stories of long-ago royalty, of white wolves and gray diamonds. But when the princess takes a particular interest in her, Sophie grows concerned. What is her place in the sinister mystery that surrounds her? Even as the wind and wolves howl outside, is she more in danger now, a prisoner of the palace, than she ever was lost in the snow?