Michel Simon

Professor Charles Buisson

Brigitte Auber

Gisèle, student of Buisson

Henri Génès

Lucien Mosca, boss of Ruban Bleu

Germaine Kerjean

Mrs. Rédéri

Anne Campion

The determined trafficker

Philippe Mareuil

Pierre-Dominique, aka 'Pépé'

Robert Lombard

Maurice, Buisson's assistant

Georges Galley

Patrice

Suzanne Norbert

Mrs. Buisson

Gaby Basset

Henriette, washroom attendant