The Ultimate Code Breaker's Puzzle Book - Over 50 Puzzles to become a super spy, crack codes and train your brain

Take on the role of an adventurous master code-breaker on a mission to reveal secret messages, crack open mysterious safes and hunt down treasure. Packed with brilliant puzzles by Dr Gareth Moore, who puts skills of perception, logic, problem solving and lateral thinking to the test! It's great fun, maths at its best!