Having lost his physician's license, Dr. Louis Krantz joins a gang of hoods to treat their wounded. When his son falls ill and needs expensive medical help, Louis decides to participate in a hold-up with the gang. Unfortunately for them, the robbery goes wrong. The gang boss, persuaded that Louis has betrayed them, decides to gun him down.
| Actor | Role |
|---|---|
| RRaoul de ManezDoctor Louis Krantz | Doctor Louis Krantz |
| GGeorges RandaxJean Verly | Jean Verly |
 Anne-Marie MersenSonia | Sonia |
| RRoger DutoitInspector Martin | Inspector Martin |
| EEva BovyThe first neighbor | The first neighbor |
| LLucienne ColbrantAnna | Anna |
| PPierre ComtePaul Hermann | Paul Hermann |
| GGaston DerblayProfessor Lowart | Professor Lowart |
| PPatrick DomainJacky | Jacky |
 Gérard DournelPierrot | Pierrot |
| LLéon GarnyInspector Janssens | Inspector Janssens |
| JJean GerardyInspector Walters | Inspector Walters |
| SSuzanne GohyNicole | Nicole |
| IIvan GovarRené Minelli, gangster | René Minelli, gangster |
| AAdelin HamelMichel Jamart | Michel Jamart |
| MMarcel LomaRaymond | Raymond |
| CChristine LucaMalou | Malou |
| MMartial PréalPriest | Priest |
| JJacques PrévotWilly Hermann | Willy Hermann |
| GGaby Saint MauxSuzy | Suzy |
| GGérard VillerEric Mertens | Eric Mertens |
 Liliane VincentMaggy | Maggy |