Young CAM Jansen and the Substitute Mystery '11, Paperback/David A. Adler

Cam and her classmates have a forgetful substitute teacher. First, heforgot the homework assignment. And where did he put his jacket? But when his car keys and cell phone go missing, everyone starts to wonder: did he lose them or were they stolen? Readers will love to click along with Cam as she solves this latest easy-to-read mystery.