Kurt Freiherr von Plettenberg was 54 when he threw himself from a fourth-floor window of a Gestapo jail. This biography tells for the first time how a scion of German aristocracy, who fought with distinction in both world wars, helped organize resistance to the Nazi regime, culminating in the July 1944 plot to assassinate Hitler. Only captured in March 1945 as the Reich was crumbling, he took his own life to avoid betraying his friends under torture.