The Cam Jansen Fun Book Author:David A. Adler Cam Jansen is an ace detective with a photographic memory. Solving mysteries is not all fun and games, but this book is! Featuring a gatefold with two colorful cutout code wheels for encoding and decoding top secret messages and packed with activities to challenge the mind, The Cam Jansen Fun Book will provide hours of fun for aspiring ... more »junior detectives and puzzle fans alike.« less