by Lynne Jonell
Emmy is a very rich, lonely girl. Her parents go off on long trips and leave her with a horrible nanny, Miss Barmy. When Emmy starts hearing her class's pet rat talking to her, an exciting series of events unfolds. The rat is one of many rodents with special powers, most of them trapped where an evil professor does experiments with them. Emmy begins to learn of their powers and she realizes that Miss Barmy is using the rodents to control her, her parents, and her classmates! Miss Barmy is after Emmy's fortune and she will do anything to get it. Emmy and the rat join forces in a fun and amazing battle to stop the evil nanny.