In a fascinating biography, American academic Pat Shipman makes the case that, far from being the betrayer, she was the one betrayed, and by that breed she loved all her life - men. It was men who, like witchhunters, built the case against her, driven by prejudice not fact. And with France gripped by anti-German spy mania, few would stick their heads above the parapet to defend her. Britain's fledgling intelligence service, MO5 (soon to change its name to MI5) also helped dig her grave with, as we will see, the dodgiest of dossiers.