Catholic Gestapo agent who spied on Nazis and became anti-Zionist rabbi | ynetnews

Madeleine Lust Ferraille, Ruth Ben David and Ruth Blau are all the names of the same woman, whose life story has fascinated Jews the world over: a French double agent who found herself in trouble with the law and joined an anarchist Haredi faction – and kidnapped Yossele Schumacher.