During the mid-1970s, in the Mexican state of Guanajuato, authorities discover a clandestine burial ground. The corpses are from murdered prostitutes. The suspects are three sisters known as "Las Poquianchis".
| Writing | Tomás Pérez Turrent | Writer |
| Directing | Felipe Cazals | Director |
| Writing | Xavier Robles | Writer |
| Production | Jesús Fragoso Montoya | Producer |
| Production | Víctor Moya | Producer |
| Crew | Álex Phillips Jr. | Cinematography |
| Editing | Rafael Castanedo | Editor |
| Art | José Torado | Set Decoration |
| Art | Jorge Sainz | Set Designer |
| Art | Salvador Lozano Mena | Production Design |
