<p>When Dorothy triumphed over the Wicked Witch of the West in L. Frank Baum's classic tale, we heard only her side of the story. But what about her arch-nemesis, the mysterious Witch? Where did she come from? How did she become so wicked?</p> <p>Gregory Maguire has created a fantasy world so rich and vivid that we will never look at Oz the same way again.</p>