Born into the celebrated Mitford family in 1910 and married at 18 to Bryan Guinness, Diana Mosley was part of a sparkling society circle which included the leading artists and intellectuals of the time: Evelyn Waugh dedicated Vile Bodies to her. Then, at the age of 22, she fell in love with Oswald Mosley and committed her life to his ideas. In Germany she was a friend to Hitler and Goebbels; by 1940 she was in a damp cell in Holloway prison. Drawing on fresh interviews with Diana - whose views are as controversial today as they were then - this is a revealing biography of the wife of the most hated British politician of the century.