Inspector Dumont and his deputy Inspector Queneau investigate the murder of a young woman. They learn that the victim was pregnant before her death and that she was the mistress of Mario, a shady playboy who had dumped her while she was with child. A doctor is first suspected but is he the real culprit?
| Directing | Pierre Thévenard | Director |
| Sound | André Jolivet | Original Music Composer |
| Production | Robert Sussfeld | Production Manager |
| Writing | Pierre Thévenard | Writer |
| Camera | Jean Bourgoin | Director of Photography |
| Editing | Georges Alépée | Editor |
| Art | Lucien Aguettand | Production Design |
| Sound | Maurice Carrouet | Sound |