Pierre Fresnay
Professor Louis Delage
Renée Devillers
Florence Delage
Claire Duhamel
Catherine Delage
Marcel André
Doctor Charles Tannard
Nadine Alari
Yvette
Roland Alexandre
Jacques Brulages
Pierre Destailles
Gaston Berval
Michel Vadet
Doctor Larmy
Christiane Barry
Jacqueline
Georgette Anys
Madame Berval
Philippe Mareuil
Georges
Jean-Claude Pascal
Marcillac
Maurice Ronet
François
Claude Nicot
Barby
Madeleine Barbulée
Marie-Laure
Robert Moor
Professor Peccavi
Ky Duyen
Chang, the butler
Émile Genevois
Gaston's friend
Raymond Galle
A doctor
Bernard Hubrenne
A student
Catherine Romane
Paulette
Georgette Talazac
The nurse
Claire Muriel
A patient
Christian Fourcade
Emile
Serge Lecointe
Little Albert
Elisa Lamotte
The Lady of Orleans
Marguerite Garcya
Madame Martin
Tania Soucault
Jacky
Nadine Bellaigue
(uncredited)
Anne Béranger
(uncredited)
Henri Doublier
(uncredited)
Maguy Horiot
(uncredited)
Frédérique Hébrard
(uncredited)
Julien Maffre
A sick (uncredited)
Dominique Marcas
(uncredited)
Jacques Monod
The gendarme (uncredited)
Bernard Musson
An assistant to Doctor Delage (uncredited)
Alain Raffael
(uncredited)
Joëlle Robin
(uncredited)
Jean Thielment
(uncredited)