Cam Jansen's plans for her parents' surprise birthday party work out perfectly. Unfortunately, the party is interrupted by news that Cam's grandparents have been robbed in the parking lot at the airport. Cam and her parents rush to help them. David A. Adler's Cam Jansen series challenges young readers to solve the crime. For more of Cam's adventures, look for Cam Jansen and the Mystery of the Dinosaur Bones.