CAM Jansen and the Graduation Day Mystery #31 - David A. Adler

Cam Jansen and her photographic memory help her friend's grandfather retrieve his missing bag with an important graduation gift inside. The beloved elementary school sleuth Cam Jansen is back in her 31st mystery Eric's father is finally graduating from college. But before the celebration can begin, a very special present from Grandpa Shelton disappears. Was it lost--or stolen? There's no way Cam will let a thief ruin the graduation celebration She must use her photographic memory to track down the gift.