Reporting for duty -- 1938-39: The school of codes -- 1939: Rounding up the brightest and the best -- The house and the surrounding country -- 1939: How do you break the unbreakable? -- 1939-40: The Enigma initiation -- Freezing billets and outdoor loos -- 1940: the first glimmers of light -- 1940: inspiration and intensity -- 1940: The coming of the bombes -- 1940: Enigma and the Blitz -- Bletchley and the class question -- 1941: The Battle of the Atlantic -- Food, booze and too much tea -- 1941: The wrens and their larks -- 1941: Bletchley and Churchill -- Military or civilian? -- 1942: Grave setbacks and internal strife -- The rules of attraction -- 1943: A very special relationship -- 1943: The hazards of careless talk -- Bletchley and the Russians -- The cultural life of Bletchley Park -- 1943-44: The rise of the colossus -- 1944-45: D-Day and the end of the war -- 1945 and after: The immediate aftermath -- Bletchley's intellectual legacy -- After Bletchley : the silence descends -- The rescue of the Park.