The Witches by Roald Dahl. A young boy and his Norwegian grandmother, who is an expert on witches, together try to foil a witches' plot to destroy the world's children by turning them into mice. The race is on for the hero to expose the witches before they dispose of him. E. loves all of Dahl's books and this is a scary, funny, imaginative classic. Here is a good lesson plan page. And here is a pretty tough quiz.