The GCHQ Puzzle Book II by GCHQ

Challenge yourself with the GCHQ teams longawaited second puzzle book full of both harder and easier brain teasers. This is the perfect gift to fuel his ludicrous presumption that he could have definitely been a spy even better if hes already dogeared the first version Huffington Post 10 Christmas Gifts for him under GBP15 Fiendishly tricky Daily Mail With their first bestselling book The GCHQ Puzzle Book the UKs intelligence and security experts tested us with puzzles codes and reall Paperback softback