Book excerpt: For centuries people have told stories of cackling witches and crafty goblins. In the past, people thought witches ruined crops, genies granted wishes, and goblins caused accidents. Many cultures thought medicine was magic. Magical monsters continue to frighten and fascinate people in books, movies, and games. Some say magic is real. Others say it's just the stuff of stories. Learn all about magical monsters and fall under their spell . . . if you dare!