The Mi6 Puzzle CacheHardcover, 1 September 2020

For over 100 years, MI6 has been at the heart of a number of puzzling and mysterious events, and as the world has entered the digital age this has only increased. Put your undercover prowess to the test in The MI6 Puzzle Cache, where you must crack codes, puzzles, ciphers and logical conundrums, all based on the modern missions of Britain's top agents.