When an up-and-coming singer's career is jeopardized by morphine addiction, her brother takes on the ruthless dope pushers who are intent on keeping her hooked.
| Actor | Role |
|---|---|
 Jean MuratHenri Werner | Henri Werner |
 Danièle ParolaLiliane Werner | Liliane Werner |
 Peter LorreThe Hunchback | The Hunchback |
| JJean WormsLouis Gordon | Louis Gordon |
 Jean MercantonPierre | Pierre |
 Jeanne Marie-LaurentMadame Werner | Madame Werner |
 Monique RollandDora Lind | Dora Lind |
 Raoul AslanDr. Ourousseff | Dr. Ourousseff |