Delfina and María de Jesús González

[1] The sisters were born in El Salto de Juanacatlan, Jalisco, Mexico to Isidro Torres a policeman and his wife Bernardina Valenzuela.

The police picked up a woman named Josefina Gutiérrez, a procuress, on suspicion of kidnapping young girls in the Guanajuato city area, and during questioning, she implicated the González sisters.

Police officers searched the sisters' property near the city of San Francisco del Rincón and found the bodies of eighty women, eleven men, and several fetuses.

[citation needed] The sisters killed the prostitutes when they became too ill, damaged by repeated sexual activity, lost their looks, or stopped pleasing the customers.

In prison, Delfina died due to an accident where a construction worker heard her and tried to catch a glimpse at the serial murderer before accidentally dumping cement on her head, and María finished her sentence and dropped out of sight after her release.