Inspector Francis
Commissioner Lampin
Colette, journalist
Joseph
Ida
Cleaning lady
Bourel
Squire
Parpèle, reporter
Fishmonger
Monsieur Ducret
Bruiser
Poussin
Investigating judge
Balzac
Girl
(uncredited)
The wife of a Marseille industrialist is murdered. An inspector and a young journalist investigate together, and suspect the husband, then the lover, before finding the real culprit.