Case of the Locked Box (Book 11)

The Milo & Jazz Mysteries stars two kid detectives-in-training who use STEM problem-solving skills as they race to unravel cases and save the day! Perfect for fans of Encyclopedia Brown, Cam Jansen and Nate the Great.
 
Someone stole $100 from a locked cashbox... and almost everyone in school thinks the culprit is Jazz! When Jazz is put on trial in student court, it's up to Milo to prove her not guilty! This ideal series for beginning readers making the transition to chapter books has incredible Super Sleuthing activities in each book, including hidden pictures, puzzles, mini-mysteries, and quizzes—plus free online activities.