Pierre Fresnay as Commissaire Wens

Suzy Delair as Mila Malou

Jean Tissier as Triquet

Pierre Larquey as Mr. Colin

Noël Roquevert as Dr. Linz

René Génin as Alfred

Jean Despeaux as Kid Robert

Marc Natol as Armand

Huguette Vivier as Nurse Vania

Odette Talazac as Madame Point

Maximilienne as Miss Cuq

Sylvette Saugé as Christiane

Louis Florencie as Commissaire Monnet

André Gabriello as Police Officer Pussot

Raymond Bussières as Turelot

Antoine Balpêtré as Albert (uncredited)

Paul Barge as Ernest (uncredited)

Léon Belières as Businessman (uncredited)

René Blancard as Inspector Picard (uncredited)

Lucien Blondeau as Police Prefect Edouard (uncredited)

Louis Denalair as Police Inspector (uncredited)

Géo Forster as Guest (uncredited)

Gustave Gallet as Judicial Police Director (uncredited)

Léon Larive as Mr. Albert (uncredited)

Albert Malbert as Taxi Driver (uncredited)

Maurice Marceau as Bistro Client (uncredited)

Marcel Pérès as Inspector Ballandieu (uncredited)

Martial Rèbe as Cashier (uncredited)

Maurice Salabert as Cycling Police Officer (uncredited)

Evelyne Séjourné as Handmaid (uncredited)

Guy Sloux as Journalist Destirac (uncredited)

André Varennes as Brigadier (uncredited)

Henri Vilbert as Police Officer (uncredited)