David A. Adler

Danny Cohen and Calvin Waffle are two very different kids. Danny likes playing baseball; Calvin enjoys strange experiments. Danny follows the rules at school; Calvin tries to drive his teacher crazy. Danny and Calvin decide to team up for the big jelly bean experiment....

There's nothing like a good monster movie--except when the second reel gets stolen. It's up to Cam and her friend Eric to piece together clues that leave everyone else in the dark. Illustrated...

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 a park with U.F.O.s in sight! Cam and Eric see flashing lights in the sky, and everyone thinks aliens have landed. But Cam knows there's...

When fifth-grader Cam notices that the prizes for the most difficult game at the school carnival are rapidly disappearing, she uses her amazing photographic memory to investigate...

Cam's box camera disappears from the science fair, and valuable gold coins are missing from a coin shop. Can Cam's mental camera help catch the thief?...

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...

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 a book signing. Cam is waiting in line for a book "pawtograph" from famous TV dog Poochie when he mysteriously disappears and is...

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...

When Aunt Molly's wallet is stolen at the circus, Cam suspects that there's something not-too-funny going on under the big top. Is one of the clowns really a criminal?...

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 zoo. When a few monkeys suddenly go missing from their cage, Cam is sure she knows how the thief took them. Can she find the missing...

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 museum. Cam and her class are on a fild trip at the museum when Cam discovers that some bones are missing from a dinosaur skeleton...

What's a contest without a prize? Aunt Molly has entered a joke-telling contest at a local comedy club....