The young detectives of Chestnut Close - Matthew, Melody and Jake - are back to solve another twisty mystery!

When a long-buried skeleton is found in Old Nina's garden, the kids are set on discovering who it is, how it got there and who was responsible.

Then Old Nina's long-lost son turns up, with his own kid in tow, which should be a cause for celebration. But are the pair really who they are claiming to be - or are they imposters? As Matthew, Melody and Jake investigate, they dig up jaw-dropping secrets and uncover a plot to stash some priceless jewels on the Close...

• A page-turning, twisty mystery set in the world of huge bestseller The Goldfish Boy
• The Times has called Lisa Thompson "one of our most inventive writers for children"