The East German Ministry for State Security stood for Stalinist oppression and all-encompassing surveillance. The “shield and sword of the party,” it secured the rule of the Communist Party for more than forty years, and by the 1980s it had become the largest secret-police apparatus in the world, per capita. Jens Gieseke tells the story of the Stasi, a feared secret-police force and a highly professional intelligence service. He inquires into the mechanisms of dictatorship and the day-to-day eff...