In the 1930s Stalin was obsessed with closing the technology gap between the Soviet Union and the West and recruited Stanislav Shumovsky to join his fledgling espionage and infiltration efforts. ‘Agent Blériot’ enrolled at MIT in 1931 and subsequently stole many of their crucial aviation secrets, allowing Russia to transform its military capacity. Based on documents from the Churchill Archives, and including numerous photographs and maps, this book shows the key role Shumovsky played in establishing the Russian spy network.