Your orders have arrived. Report to Bletchley Park and prepare to put your codebreaking skills to the test!

From the minds behind the phenomenal bestseller Bletchley Park Brainteasers comes a brand-new collection of fiendishly challenging puzzles.

Sharpen your pencil, keep your wits about you and get cracking on over 300 pages of fiendishly challenging puzzles and fascinating Bletchley Park history. From secret messages and cunning ciphers to ingenious codes and perplexing logic problems, have you got what it takes to follow in the footsteps of Britain's wartime codebreakers?

Step inside the extraordinary world of Bletchley Park, where thousands of brilliant minds worked in secrecy to help change the course of the Second World War. Discover the stories behind the famous Victorian mansion and its bustling huts, meet the Wrens operating Colossus, the indexers piecing together vital enemy intelligence and the radio operators intercepting messages from across the globe.

Packed with brand-new puzzles inspired by the people, machines, secrets and ingenious methods of Britain's wartime intelligence operation, The Official Bletchley Park Puzzle Book brings the remarkable history of British codebreaking to life - one puzzle at a time.

Your mission starts here.