We take a slight turn in our usual narrative to bring you one of the most incredible spy stories ever told. Mike talks with bestselling author Sonia Purnell about her book A Woman of No Importance: The Untold Story of the American Spy Who Helped Win World War II. It is a biography of Virginia Hall, an American woman who was one of the most successful undercover agents in the second world war despite the attitudes of men in power towards women and the fact that she was a below-knee amputee. The story is better than any fictional spy story you've ever seen.