Gerald du Maurier
History comes alive in this drama featuring Elisabeth Bergner as Sophia Augusta Frederika, the German princess renamed Catherine who marries Peter (Douglas Fairbanks Jr.), the grand duke of Russia. The union quickly falters as Peter's demons take over. Before long, he has placed another woman in his bed and begun his reign of terror. His citizens carry out a coup that finally places Catherine in power, but requires her to make a painful choice.