Four women are murdered, each knifed and, despite torn garments, remain virtuous. As famed police inspector Jules Maigret pieces the clues together, he comes to realise that for the elusive man that he suspects to be unmasked, he has to set a trap.

Jean Gabinas Commissioner Jules Maigret
Annie Girardotas Yvonne Maurin
Olivier Hussenotas Lagrume
Jeanne Boitelas Louise Maigret
Lucienne Bogaertas Veuve Adèle Maurin
Jean Debucourtas Camille Guimard
Paulette Dubostas Mauricette Barberot
Lino Venturaas Inspecteur Torrence
Jean Desaillyas Marcel Maurin
Guy Decombleas Mazet