When Monsieur Crauqual, the supervisor, is found hanging, all wonder why this rather rich person decided to kill himself. And when a pupil is found hanging too, François and his friends decide to investigate. They are certain there is a killer within the walls of Collège François 1er and determined to prevent him from going on running wild.
Director:
François Patrice
Dominique Lekain
Constant Rémy
Deberny
Lise Topart
Mariette
René Génin
Belleu
Lucas Gridoux
Commissioner
René Blancard
Morgain
Pierre Labry
Fiellat
Léonce Corne
Professor
Claire Gérard
Madame Lieusaint
José Artur
Luxeuil
Henri Valbel
Monsieur Crauqual
Luce Fabiole
Godmother
Jacques Sommet
Monitor
Robert Moor
Professor
Max Dalban
Doctor
Georges Hubert
Lieusaint
Charles Vissières
Samson
François Loiselet
Student
Dino de Philippe
Roland Moreau
Student
Denis Gorman
Dany Bill
Maledieu (uncredited)
Lucien Galvignet
Student (uncredited)
Marcel Loche
(uncredited)
Jean-François Martial
Regular in the circle (uncredited)
Christian Modeste
Student (uncredited)
Georges Olivier
Student (uncredited)
Véran
Student (uncredited)