Marie-Madeline Dossement, who lived in Paris from approximately 1748 to 1763, is the subject of this study.1 Dossement was without accomplishments or distinction, completely obscure during her own lifetime and generally ignored therea er. She would have remained forgotten and unknown had she not embarked in about 1750 on an unusual career, that of police informer. Every fortnight, she submitted what she called her feuille (paper) or écrit (writing) to Paris police chief, René Berryer de Ravenoville or, more accurately, to his clerks, who then had it copied onto sheets of white paper loosely bound with blue ribbon. In these pages, now preserved in the Archives de la Bastille at the Arsenal library in Paris, Dossement detailed daily life in her brothel, for she was a ‘madame’ or brothel mistress.