“An unusual story, beautifully told, of a young woman who spied for the Allies behind the Western Front, was captured by the Germans, and executed. Unlike the death of nurse Edith Cavell, whose execution caused a worldwide uproar, Gabrielle Petit's fate went almost unnoticed at first. Only after the armistice would her contemporaries, to whom she was a modern Joan of Arc, raise her to the status of national heroine. With all the skill of a Natalie Zemon Davis, Sophie De Schaepdrijver brings to life a figure who fought the first German occupation of Europe in the twentieth century. This is at once the biography of a woman and her achievement of autonomy, and a riveting account of dangerous intelligence work, hitherto previously unknown. The sophisticated world of German counter-intelligence that rolled up the Allied espionage networks is equally well treated. Furthermore, the book analyses the construction of memory, that vital ingredient of our culture. Using biography to unlock the multiple histories of the war, it is nothing short of a triumph of modern historiography. A must-read for all those interested in the First World War.” —Alan Kramer, Professor of European History, Trinity College Dublin, Ireland