Teen-age twins Christine and Susan Pratt are excited about working as counselors at a lakeside summer camp. But they quickly learn there are strange goings-on at Camp Pinewood.  Someone is sabotaging it, and with supplies mysteriously disappearing and plans being ruined, it’s in danger of closing.  The clever twins put their sleuthing skills to work, hoping to solve the mystery and save the camp. Third in the Pratt twins series. Young Adult Fiction by Cynthia Blair; originally published by Fawcett Juniper