A thrilling mystery story with mini chapters containing an innovative mix of narrative text and a puzzle (called a 'Detectogram®') for the reader to solve and keep the mystery unravelling.

Police Inspector Cross and her officers have been called out on a mysterious case. They've traced the notorious Dempsey Gang to a warehouse, but they've arrived too late! The gang have sped off into the distance with stolen bars of gold. All they've left behind are a few stray scraps of paper and a very noisy parrot, who seems to be squawking cryptic clues about where the gang went next. Now, it's up to the reader to crack the case, solving one Detectogram® at a time.

Packed with a mix of 46 logic, visual and text-based puzzles. From clues to unravel, maps to navigate, suspects to examine and codes to crack, there’s plenty of fun and perplexing puzzles to be solved in this brain-busting mystery for young super sleuths.

This exciting and interactive mystery is perfect for kids aged 9-11.

Also available in the series:

9781837251544 Detectograms®: The Mole Who Went Undercover (July 2026)