Robert Bernier murdered his brother with the complicity of a worker. The only witness to the tragedy, Veronique was injured while rescuing her boss and remains blind. Later, cured by an operation, she denounces the criminal whose voice she recognized and who had taken over the factory.
| Directing | Gaston Roudès | Director |
| Writing | Xavier de Montépin | Novel |
| Sound | Jane Bos | Original Music Composer |
| Art | Hugues Laurent | Production Design |
| Camera | Jacques Montéran | Director of Photography |
| Camera | Henri Janvier | Director of Photography |
| Camera | Georges Goudard | Director of Photography |