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".

• Conacine
• Diana Bracho
• Malena Doria
• Leonor Llausás
• María Rojo
• Pilar Pellicer
• Patricia Reyes Spíndola
• Salvador Sánchez
• Jorge Martínez de Hoyos