Spy Decoder Challenge

Prove your decoder skills!

Calling all Secret Agents and spies-in-training... we need your help.

We’ve got 10 Spy Mission Bundles to give away, but only the sharpest code-crackers will get the chance to earn one! Complete the mini-mission below and you could win a bundle packed with undercover fun: two Spy Agency Puzzle Books (The Stolen Secrets and The Risky Rescue), plus a spy-themed Treasure Trail of your choice for a real outdoor mission.

Ready to crack the code?

How to enter: Complete the mission, find the final codeword, then enter it in the form below before the deadline - Midnight, Monday 23rd February 2026.

*Denotes required information

By submitting your answer, you agree to our Privacy Policy and to us contacting you from time to time with amazing offers, details of Trails, competitions and more. You can unsubscribe at any time.

While you wait to hear if you’ve won, why not head out on a real adventure? Choose a spy-themed Treasure Trail near you and turn an ordinary day into an undercover mission packed with clever clues, hidden details, and plenty of family fun. Your next assignment is ready when you are…

• There are 10 x Spy Bundles up for grabs.
• Each bundle includes two The Spy Agency Puzzle Books and a Treasure Trails Gift Voucher.
• A Treasure Trails Gift Voucher is valid for any one Treasure Trail available for sale on our website.
• The closing date for entries will be at midnight on Monday 23rd February. 
• Prizes cannot be substituted and no cash alternative will be offered.
• Open to UK residents, excluding employees of Treasure Trails.
• Only one entry per person/email address.
• Entry is via the entry form on this page only.
• Winners will be chosen at random from all correct answers.
• Winners will be notified within five days of the closing date.
• Prizes will be posted out to the winners once they have supplied their delivery address.
• The winners' names and entries will be available on request.
• The promoter is Armstrong Best Ltd t/a Treasure Trails, Truro.
• The Spy Agency Books have kindly been provided by Collins.
• By participating in this prize draw, entrants confirm they have read, understood and agree to be bound by these terms and conditions.