An in-depth investigation into the double crime of the Papin sisters, which made headlines in the early 1930s and has fascinated readers ever since. Claude Ventura returns to the circumstances of the savage murder of their boss by the Papin sisters, which occurred in Le Mans on February 2, 1933. This case fascinated Jean-Paul Sartre and Simone de Beauvoir as much as Jean Genet and Jacques Lacan.