Warning: You are about to read my utterly biggest secrets. Can I trust you? ok then. I’m Ella, and this is my diary. Ella and her bffs are wearing disguises, taking fingerprints and following footprints. Why? Because a real-life detective is visiting their school, and their classroom is at the centre of a mystery.

• Suitable for ages: 7-12 years
• Number of pages: 192 pages
• Book cover: Paperback
• Illustrated by Danielle McDonald