No mystery is too great for super-sleuth Cam Jansen and her amazing photographic memory!

Mysteries follow super-sleuth Cam Jansen everywhere she goes...even to the community hobby show. Cam and Eric are checking out a sports memorabilia booth when a baseball autographed by Babe Ruth disappears. Can Cam catch the thief and recover the Babe's ball?
"What wrongdoer is any match for Cam Jansen, the girl with the amazing photographic memory?" ( Booklist) "An uncluttered plot, a clever heroine, clear language, and a dash of humor make for a zestful mystery."(School Library Journal)