The Mudpack And Me — Joan R. Thompson

Beauty is only skin deep. . .
What are two thirteen-year-olds doing at a health resort? Susan Hubbard wants to lose ten pounds before school begins. Her roommate, silent, sullen Tessa DeCosta is there on her soap opera star-mother's orders. What a drag! But when Susan discovers that they're fans of Constance Wainwright novels, and that Tessa is a terrific singer-songwriter, it's the beginning of a great friendship. In no time the girls are into mudpacks, manicures and mystery. What's the secret of their hunky yoga instructor Lorenzo? Why is he sneaking into the woods every day? Nothing can stop the girls from learning the truth. After all, how deceptive can appearances be?