Use your powers of logic and just a little educated guesswork to unlock the key to the codewords in this super volume of over 95 puzzles. Each letter is represented by a number, and it's down to you to unscramble the clues and break the code. Produced by the Bletchly Park Trust this book is a brilliant compilation to awaken your inner sleuth. This paperback book has 128 pages and measures: 19 x 13 x 1cm.
