Maryanne's debut.
René Lefèvre's film debut.
Original literary source: "Knock, ou le triomphe de la médecine", play by Jules Romains, published by Gallimard, Paris, 1924, 169 p.
An exceptional projection of the film took place in Uzerche, place of filming of the exteriors supposed to take place in the village of Saint-Maurice. Descendants of the extras who participated in the shooting were present.