All that 11-year-old Meghann can think of is that her summer is ruined because her weird cousin William is coming for a visit. His allergies, his whining, his altogether obnoxious personality are not things that Meghann and her other cousin Marcie -- Meghann has lots of cousins -- want around all summer. But Meghann comes up with a business plan that will earn her and Marcie some money and at the same time keep William and his allergies away from them: Pet Pals, a pet-sitting service. Things go according to plan until one of their clients, Althea, the boa constrictor, gets lost. The two cousins have overcome their squeamishness enough to feed live crickets to black snakes, but there is no way they will pick up Althea and return her to her cage -- if they can even find her. But Pet Pals is their responsibility, and if they don't soon feed Althea her live mouse, she could starve. They put up posters offering a reward to anyone who finds the snake, and William answers their ad. William gets them out of their predicament, Meghann's feelings towards him change dramatically, and he thinks of a way to make the rest of their summer perfect. Hermes (Nothing but Trouble, p. 226, etc.) doesn't surprise at all in this typical preteen series debut, but she doesn't disappoint, either. Light and fun.