No mystery is too great for super-sleuth Cam Jansen and her amazing photographic memory! Can Cam help catch the diamond thief? Cam and her friend Eric are sitting at the mall when the jewelry store is robbed. Cam sees the thief, but the police arrest the wrong person. Now it's up to Cam to catch the real criminal! The Cam Jansen books are perfect for young readers who are making the transition to chapter books, and Cam is a spunky young heroine whom readers have loved for over two decades.