Cinderella Smith wants to shock and amaze her class with her report on endangered species. So when the books she needs go missing from the library, she teams up with her best friend, Erin, to solve the mystery. But time is running out! Then she gets a totally weird note:

Don't tell anyone!
I'll get in big trouble!
Look behind
E

Missing books and "Look behind E" . . . What in the world could it mean Just as all seems lost, Cinderella is struck with a capital A-H-A AHA! moment that could blow this case wide open. Someone's in cahoots, that's for sure, and Cinderella Smith won't give up until she solves the mystery!