In 1942, the Gestapo sent out an urgent transmission: “She is the most dangerous of all Allies spies. We must find and destroy her.” The target in their sights was Virginia Hall, a Baltimore socialite who talked her way into Special Operations Executive, the spy organisation dubbed Winston Churchill’s “Ministry of Ungentlemanly Warfare.” Sonia Purnell gives a brilliant talk on this astonishingly brave woman who became a linchpin of the Resistance and liberated swathes of France from the Nazis after D-Day.