Harro Schulze-Boysen already had shed blood in the fight against Nazism by the time he and Libertas Haas-Heye began their whirlwind romance. She joined the cause, and soon the two lovers were leading a network of anti-fascist fighters that stretched across Berlin's bohemian underworld. But as Norman Ohler recounts here, nothing could prepare Harro and Libertas for the betrayals they would suffer in this war of secrets—a struggle in which friend could be indistinguishable from foe. Drawing on unpublished diaries, letters, and Gestapo files, Ohler spins an unforgettable tale of love, heroism, and sacrifice.