The British Broadcasting Corporation is a British institution and its story during the Second World War is also our story. This was a period of remarkable voices: Churchill's speeches de Gaulle's broadcasts from exile Richard Dimbleby and Vera Lynn. Radio offered an incomparable tool for propaganda while at the same time eyewitness testimonies gave a voice to everyone securing the BBC's reputation as a purveyor of truth. Edward Stourton explores the BBC's wartime journey investigating archives diaries letters and memoirs to examine what the BBC was and what it stood for.