Who is Sheila Tubman? Even Sheila isn’t sure. Sometimes she feels like confident Sheila the Great, and other times she's secret Sheila, who’s afraid of spiders, swimming, and, most of all, dogs. When her family decides to leave the city for a summer in the country, Sheila will have to suffer everything from long-eared dogs to swimming lessons to creepy spiders. That’s enough to drive a city girl nuts! If she survives at all, Sheila may be forced to admit that she’s no supergirl.