One kooky cookie factory! One delivery truck! One slimy rat! And lots of cookies! Equals one delicious adventure! It’s Girl Scout Cookie sale time for Avery, Ella and their friends Kate and Annie. The girls even get a chance to tour a new bakery where cookies are made! But when the girls see a mysterious mix-up at the cookie factory… and notice some of their cookie boxes are missing… and get caught in a dark delivery truck… a mystery really starts cooking! Who is the cookie thief, anyway? And why?? Tag along with foursome as they try to make sense of this tasty cookie case!

This mystery incorporates history, geography, culture and more! Fun activities, built-in book club and SAT words are in each book. This Carole Marsh Mysteries will be assigned an Accelerated Reader reading levels, points and quiz numbers, Lexile Measures, Fountas & Pinnell levels and a Developmental Reading Assessment.