Breton doctor René Laennec fights tooth and nail against consumption, all the more desperately as his brother Michaud has just died of it.
Pierre Blanchar
as Dr. Laennec
Florent Antony
as Beaugendre
Charles Bouillaud
as Un domestique
René Clermont
as Le mime
Paul Demange
as Le client enrhumé
France Descaut
as Clarisse d'Anthiages
Christian Duvaleix
as Le charlatan
Pierre Dux
as Professeur Récamier
Jacques Dynam
as Meriadec
Saturnin Fabre
as Laennec Père
Guy Favières
as Le vieillard
Jany Holt
as Madeleine Bayle
