Download or read book Cam Jansen and the Graduation Day Mystery #31 written by David A. Adler and published by Penguin. This book was released on 2012-10-11 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.