A delightful young adult adventure that twists and turns through fin-de-siecle Vienna. Annika is a foundling taken in by a household of eccentic professors and kind hearted servants, is enchanted by the spectacle of Vienna and the simple pleasures of domestic chores. Her life is turned upsidedown when her aristocratic mother unexpectedly reappears in her life and sweeps her off to live in a castle in Germany. Ibbotson, a favorite writer for children, spent her early years in Vienna.  (CEU24, $7.99)