Bernard Fresson
as Bernard Hannecart
Claude Rich
as Claude Ridder
Van Doude
as Jan Rouffer, le chef du centre de recherches de Cr
Georges Jamin
as Le chirurgien de la clinique (uncredited)
Olga Georges-Picot
as Catrine
Anouk Ferjac
as Wiana Lust
Annie Fargue
as Agnès de Smet, la jeune femme qui sait dire non
Marie-Blanche Vergne
as La fille du tramway et des escaliers / Young woman
Yvette Étiévant
as Germaine Coster, la confidente au bureau
Irene Tunc
as Marcelle Hannecart