"Historians identify Mildred Harnack as the only American in the leadership of the German resistance, yet her remarkable story has remained almost unknown until now. Harnack's great-great-niece Rebecca Donner draws on her extensive archival research in Germany, Russia, England, and the U.S. as well as newly uncovered documents in her family archive to produce this astonishing work of narrative nonfiction. Fusing elements of biography, real-life political thriller, and scholarly detective story, Donner brilliantly interweaves letters, diary entries, notes smuggled out of a Berlin prison, survivors' testimony, and a trove of declassified intelligence documents into a powerful, epic story, reconstructing the moral courage of an enigmatic woman nearly erased by history." --Publisher.