Dame Agatha Christie was suspected by the secret services of modelling one of her wartime characters Major Bletchley on the Bletchley Park venue for codebreakers who cracked the German Enigma machine code and which shortened the war by two years in Europe. Mrs. Christie was renowned for her 80 detective novels,many of which have been serialized with David Suchet as her detective Hercule Poirot,and the late Joan Hickson as the definitive Miss Marple,though others have stepped into that role following her death.http://rt.com/art-and-culture/agatha-christie-investigated-enigma-463/