The series is available for purchase across many online retailers such as Amazon, Dymocks, Booktopia, The Nile, and many other places worldwide, meaning you can purchase them wherever you are.
Booktopia: https://www.booktopia.com.au/search?author=Annette+Coles
Ebay: https://www.ebay.com.au/itm/376778569103
Twins Maddy and Isaac Kent have always dreamed of solving real mysteries. Suddenly, one drops upon them when they least expect it. Maddy keeps hearing strange noises in the night at their new house in Cookville. As the twins investigate, they make a surprising discovery—a 19-year-old robbery that was never fully solved. Aided by their friends and older brother, can the twins solve this mystery before it is too late?
Annette Coles Books 
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