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Old Portsmouth

The Mystery of Nelson's Stolen Diamonds

Can you catch the villain behind Portsmouth’s most daring diamond heist?

+ £1.99 postage
Collect at starting point

Starting Point

41 High St, Old Portsmouth, Portsmouth



2-3 hours


3km (approx.)

'The perfect afternoon of Portsmouth, puzzles, and history!'

Turn the historic streets of Portsmouth into the world's largest escape room with this self-guided mystery adventure book!

Solve the clues

Discover the history

Crack the mystery!

The Mystery

Return to the scene of Portsmouth’s most daring robbery as you hunt for a mysterious thief who stole a priceless diamond necklace from the safety box of a famous tavern. 

The Challenge

Solve a range of cryptic clues including word games, maths puzzles, and hidden objects, as you follow a route, eliminate potential suspects and discover the true identity of the daring thief!

The History

This treasure hunt is the best way to see the key historic sights of the city, visit its most atmospheric taverns, and soak up true local stories of its most notorious characters and places.

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