The National Archives UK

Decode messages, untangle clues, and test your logic with 134 addictive and exciting Murdle-style puzzles based on 500 years of British espionage history, from Britain’s preeminent puzzle master with the support of The National Archives, UK.

Britain’s leading puzzle master, Dr. Gareth Moore, has plumbed the depths of the UK’s National Archives to transform the best in espionage history into 134 thrilling puzzles that you can solve from the comfort of your couch. Decipher encoded messages to stop treason in its tracks, assemble clues to intercept dangerous missives, and put your logic to the test as you uncover enemy locations and support rescue missions.

Spydle puts you right into the center of the action with tales of espionage and intrigue from Thomas Cromwell’s spy network to Guy Fawkes, Mata Hari, the Enigma machine, and more. With puzzles across an array of difficulty levels, alongside photographs of the real papers, cyphers, and spies from throughout British history, Spydle is a must-have activity book for the spy, sleuth, and mystery lover in all of us.

The National Archives is the official archive and publisher for the UK government and for England and Wales. It is the guardian of a vast array of iconic national documents dating back over 1,000 years.

Dr. Gareth Moore is the bestselling author of The Ordnance Survey Puzzle Book, The Mindfulness Puzzle Book, The Times World Atlas Puzzle Book, The Mammoth Book of New Sudoku, Stay Sharp!, and many more puzzle and brain-training books.

Laura Jayne Ayres is a puzzle writer and researcher. After studying linguistics at the University of Cambridge, she worked as a playwright before joining Dr. Gareth Moore’s puzzle team. Books that she has worked on include Hacked: The Cyber Crime Puzzle Book, The Great British Puzzle Book, The Perfect Crime Puzzle Book, The Nautical Puzzle Book, and The Ordnance Survey Kids’ Adventure Book.