Delfina and María de Jesús González
Delfina and María de Jesús González (known as Las Poquianchis) were two sisters from the north-central Mexican state of Guanajuato. From the 1950s until the mid-1960s, the sisters ran "Rancho El Ángel"', the locus of their largescale prostitution ring and the site of at least ninety-one murders. Guinness World Records called them the "most prolific murder partnership".
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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. Investigations revealed that the sisters' criminal operation recruited prostitutes through deceptive help-wanted ads for housemaids. Many of the girls were force-fed heroin or cocaine. The sisters killed the prostitutes when they became too ill, damaged by repeated sexual activity, lost their looks, or stopped pleasing the customers.
They would also kill customers who showed up with large amounts of cash. When asked for an explanation for the deaths, one of the sisters reportedly said, "The food didn't sit well with them." Tried in 1964, the González sisters were each sentenced to forty years in prison. In prison, Delfina died due to an accident, and María finished her sentence and dropped out of sight after her release. Although they are often cited as the killers, there were two other sisters who helped in their crimes, Carmen and María Luisa. Carmen died in jail due to cancer; María Luisa went mad because she feared that she would be killed by angry protesters.
- "Most prolific murder partnership". Guinness World Records. Retrieved 9 April 2018.
- Holmes, Ronald M. and Stephen T., ed. (1998). Contemporary Perspectives on Serial Murder. Thousand Oaks, CA: Sage Publications. pp. 51–52. ISBN 9780761914211.
- Berg, Charles Ramírez (2010). Cinema of Solitude: A Critical Study of Mexican Film, 1967–1983. Austin, TX: University of Texas Press. pp. 194–195. ISBN 9780292791923.
- Peter Vronsky: Female Serial Killers: How and Why Women Become Monsters, Berkley Books, New York (2007), p. 440