 Philippe NoiretMichel Descombes | Michel Descombes |
 Jean RochefortCommissioner Guilboud | Commissioner Guilboud |
 Jacques DenisAntoine, friend of Michel | Antoine, friend of Michel |
 Yves AfonsoInspector Bricard | Inspector Bricard |
 Julien BertheauEdouard, friend of Michel | Edouard, friend of Michel |
 Jacques HillingCostes, journalist | Costes, journalist |
 Clotilde JoanoJanine Boitard, journalist | Janine Boitard, journalist |
 Andrée TainsyMadeleine Fourmet | Madeleine Fourmet |
 William SabatierLawyer | Lawyer |
 Cécile VassortMartine, workwoman | Martine, workwoman |
 Sylvain RougerieBernard Descombes, Michel's son | Bernard Descombes, Michel's son |
 Christine PascalLiliane Torrini, companion of Bernard | Liliane Torrini, companion of Bernard |
 Liza BraconnierHousekeeper | Housekeeper |
| HHervé MorelBricard's assistant | Bricard's assistant |
| SSacha BauerJudge | Judge |
| BBernard FranginJohannes | Johannes |
| GGeorges BaconnierLucien | Lucien |
 René Morard1st plumber | 1st plumber |
| HHenri Vart2nd plumber | 2nd plumber |
| JJohnny Wesseler1st strong man | 1st strong man |
 Tiffany TavernierLittle girl on the train | Little girl on the train |
 Monique ChaumetteMrs. Torrini (uncredited) | Mrs. Torrini (uncredited) |
| AAlbert HussonLucien (uncredited) | Lucien (uncredited) |
 Paul MerceyMr. Torrini (uncredited) | Mr. Torrini (uncredited) |
 Pierre-William GlennCyclist (uncredited) | Cyclist (uncredited) |
 Janine Berdin(uncredited) | (uncredited) |
 Jacqueline Corot(uncredited) | (uncredited) |
| JJean Marigny(uncredited) | (uncredited) |
| HHenri Pasquale(uncredited) | (uncredited) |
| AAndré San Fratello(uncredited) | (uncredited) |
