Sheila Tubman sometimes wonders who she reak ly is: confident, outgoing, brilliant Sheila the Great...or Secret Sheila, who's afraid of spiders the dark, swimming, and most of all, dogs. When her family decides to spend the summer in the country, Sheila has to face some of her wors fears. Not only does a dog come with the rented house, but her parents expect her to fake swim ming lessons! Sheila tries to pretend she's an expert at everything. But she isn't fooling her new best friend, Mouse Ellis-who happens to be an outstanding swimmer and a dog lover...