A band of gangsters devise a plan to steal a game contested between two drug gangs of drug traffickers: the five fraudsters will face bigger problems than them.
You can now watch Symphony for a Massacre online on the following streaming providers in the United States.
| Directing | Jacques Deray | Director |
| Writing | Alain Reynaud-Fourton | Writer |
| Writing | José Giovanni | Writer |
| Writing | Claude Sautet | Writer |
| Writing | Jacques Deray | Writer |
| Production | Julien Derode | Producer |
| Sound | Michel Magne | Music |
| Crew | Claude Renoir | Cinematography |
| Editing | Paul Cayatte | Editor |
| Art | Léon Barsacq | Art Direction |
| Sound | Alberto Bartolomei | Sound |
| Sound | Joseph de Bretagne | Sound |