We are joined today by spy author C P Bennison, author of Parallel Shadows which reveals how, in 1930s London, two young secretaries became spies for opposing sides. Against the backdrop of the Second World War, and subsequently the Cold War, the novel fictionalizes the true stories of Olga Grey, who became an MI5 double agent, and Letty Norwood, who was a major spy for the Soviet Union.

This is the Spybrary Tea Break - short interviews with spy authors.