Download or read book Cam Jansen: The Green School Mystery #28 written by David A. Adler and published by Penguin. This book was released on 2009-09-03 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cam Jansen?s school is going green. For each can or bottle Cam and her classmates bring in to be recycled, the school earns a nickel. But when all the nickels go missing, everyone suspects they were stolen. Can Cam click! and use her photographic memory to solve this mystery?