Louis Bertain is the owner of a Paris garage which is the front for a robbery gang. He and his accomplices are careful to keep up a civic veneer by day, indulging in criminal activities only when "the red light is on" at night. This status quo is upset when one of the gang members becomes convinced that Louis' younger brother is a police informer.
Unfortunately the movie Speaking of Murder is not yet available on HBO Max.
| Directing | Gilles Grangier | Director |
| Production | Alain Poiré | Producer |
| Crew | Louis Page | Cinematography |
| Production | Jacques Bar | Producer |
| Writing | Auguste Le Breton | Novel |
| Writing | Gilles Grangier | Writer |
| Writing | Michel Audiard | Writer |
| Editing | Jacqueline Sadoul | Editor |
| Sound | Jean Rieul | Sound |
| Costume & Make-Up | Yvonne Gasperina | Makeup Artist |
| Production | Walter Rupp | Production Manager |
| Art | Pierre Charron | Set Dresser |
| Crew | Michel Ygouf | Special Effects |
| Directing | Jacques Deray | First Assistant Director |
| Camera | Robert Joffres | Still Photographer |
| Camera | Louis Stein | Camera Operator |
| Sound | Denis Kieffer | Music |
| Editing | Christian Gaudin | Editor |
| Camera | Marc Champion | First Assistant Camera |
| Directing | Jacques Rouffio | Second Assistant Director |
| Art | Robert Clavel | Production Design |
| Production | Henri Jaquillard | Unit Manager |
