Marcel André

as Le père de Françoise

as Monsieur Dubois, director of the O.P.I. agency

as Mr. Bardot, director of the college

as l'inspecteur Gosset

as M. Michaud

as Dusmesnil

as Sableuse

as Le médecin légiste

as Josias

as Investigating judge

as Le commissaire

as Doctor Charles Tannard