A train driver has not slowed down at a signal and caused an accident whose victim is a gatekeeper. Two inspectors come to investigate the affair. During his interrogation, the driver refuses to provide an explanation for his action and is charged with malpractice. The only one he will tell the truth to is the gatekeeper's wife.
| Actor | Role |
|---|---|
 Charles VanelBernard - le mécanicien | Bernard - le mécanicien |
 Julien CaretteLe Gall - le mécanicien | Le Gall - le mécanicien |
 Line NoroMadame Le Gall | Madame Le Gall |
 Daniel GélinNot listed | Not listed |
 René GéninSimon l'aiguilleur | Simon l'aiguilleur |
 René BlancardLe médecin | Le médecin |
 Michel VitoldUn inspecteur | Un inspecteur |
| GGeorges VandéricL'inspecteur-chef | L'inspecteur-chef |
| MMaryse DupratL'infirmière | L'infirmière |