Elizabeth Staveley sits in the Bodleian library, holding in her trembling hands a fragment of ancient paper. It is the key to a story that has been locked away for four centuries-the story of a British sea captain's daughter held captive in the sultan's harem.Constantinople, 1599. There are rumors and strange stirrings in the sultan's palace. The chief black eunuch has been poisoned by a taste of a beautiful ship made of spun sugar. The sultan's mother...