Sarah had the Churchill Factor. Guts. Determination. The same willingness to go against the grain shown by her father, arguably Britain’s greatest wartime prime minister. An intelligent woman who enjoyed a career in show business and a rebellious personal life before supporting the Second World War effort by joining the Women’s Auxiliary Air Force, Sarah was there during Britain’s darkest hour and her story reveals a complex character who answered the call of duty when her country, and her father, needed her most. Based on significant original research carried out across four continents, including almost a hundred new interviews, this first biography of Sarah Churchill is a definitive work, and offers a fascinating new perspective on both her life and that of her iconic father.