Raymond Souplex as Étienne Ledru, commissaire de police

Pierre-Louis as Docteur Maurice Chauvin, ami d'Étienne

Jean-Paul Tribout as Félix, le fils d'Étienne

Jacques Coster as Mirepoix

Catherine Gay as Anne-Marie Ledru, épouse d'Étienne

Michel Nastorg as Simonet

Jeanne Aubert as Mme Carcopino

Lyne Chardonnet as Zozotte, la bonne

Michèle Dumontier as Juliette, la fille d'Étienne