19: Robert Hutton on MI5's most secret agent: Jack King
Radio Oldie - A podcast by Radio Oldie

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During the Second World War, MI5 ran a secret operation to root out Nazi-sympathisers. At the Oldie's May literary lunch Robert Hutton spoke about the man in charge of it all. The unsung hero: Eric Roberts. The full story is detailed in Hutton's new book, Agent Jack: MI5's secret Nazi Hunter.