What would it be like to keep a secret for fifty years? Never telling your parents, your children, or even your husband?" 'Codebreaker Girls: A Secret Life at Bletchley Park' tells the true story of Daisy Lawrence. Following extensive research, the author uses snippets of information, unpublished photographs and her own recollections to describe scenes from her mother's poor, but happy, upbringing in London, and the disruptions caused by the outbreak...

"Between the years 1939-1945, more than 10,000 people, from all ranks of life, involved themselves in one of the most top-secret missions the world has ever known. All quietly "doing their bit," they cracked enemy codes, saving Britain from Nazi domination and the world from two or three more years of war. The enigma machine. After encountering this bewildering gift from Poland, Sheila Bradshaw knew she would never again be the same. She had entered...