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Illustrated cover of Hidden Treasure by Jessie Burton featuring two children, Bo and Billy, searching a beach for hidden treasure under a bright sky.
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Enter the quest to WIN the Hidden Treasure book!

Competition closes at 23:59 on
20 May 2026

IT’S TIME TO UNEARTH A SPELLBINDING STORY!

 Illustrated cover of Hidden Treasure by Jessie Burton featuring two children, Bo and Billy, searching a beach for hidden treasure under a bright sky.

For the people who live on the banks of the River Thames, the river is a living, breathing thing. It can take your treasures, hide your treasures and, sometimes, give them back

It’s 1918, and 12-year-old Londoners Bo and Billy live on opposite sides of the capital’s river. Orphan Billy lives on the north side, while mudlarker Bo, whose brother has gone away to fight in the First World War, is from the south.

One day, the young strangers each discover half of a mysterious treasure washed up on the foreshore of the muddy riverbank. Legend has it that when the pieces are joined together the treasure will have the power to return something precious that has been lost forever

But should they put the treasure back together again? And why has the river chosen to give it to them now?

Hidden Treasure is available in paperback,
eBook and audio from all good bookshops
and online retailers now!

Competition time!

Five lucky readers will win a copy of Hidden Treasure by Jessie Burton.

For your chance to dig up this fab prize, you must embark on a quest around the website

Join the quest to win

Illustrated piece of treasure from Hidden Treasure by Jessie Burton featuring geometrical patterns

Help Bo and Billy find the other half of the mysterious treasure (shown above) by following the clues hidden around the National Geographic Kids website.

All you have to do is type the answer into the Nat Geo Kids search bar to find the next clue. Once you have found the treasure, enter the page you found it on via the form below for the chance of winning the prize.

Your FIRST clue…

Illustration from Hidden Treasure by Jessie Burton. Featuring illustrated houses and waves. It includes a clue to the competition: Bo and Billy live next to a famous river, the River Thames. What is the longest river in the world?

This competition is only open to residents of UK and Ireland.

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