This week, Wendy & Beth dive into the disturbing case of Ana María Ruíz Villeda and Rodolfo Infante Jiménez, the 1991 duo known as “The Sadists of Matamoros.” Their brutal crimes shocked northern Mexico and made headlines as one of the country’s first serial-killer pairs.
This episode was researched & scripted by Wendy & Beth Williams and edited by Minnie Williams.
Thanks for listening! This is a weekly podcast and new episodes drop on Thursdays, so until next time… look alive guys, it’s crazy out there!
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Footnotes
Articles/Websites
Trevino Jr., Oscar. (07/27/2023). Rudolfo Y Anita, Únicos Asesinos En Serie De Sirvientas En Matamoros. Vertical. Retrieved 03/20/2026 from https://revistavertical.com.mx/rodolfo-y-anita-unicos-asesinos-en-serie-de-sirvientas-en-matamoros/
PueblosAmerica.com. El Ebanito (Matamoros, Tamaulipas). (n.d.). Retrieved 03/20/2026 from https://mexico.pueblosamerica.com/i/el-ebanito-16/
Meighan, Tyrone. (10/21/1991). Matamoros Suspect a Kingsville Fugitive. Corpus Christi Caller-Times. Retrieved 03/20/2026 from https://www.newspapers.com/image/758744389/
Kenosha News. (10/19/1991). Couple Held in Slayings of Seven Teenaged Girls. Retrieved 03/20/2026 from https://www.newspapers.com/image/599559984/
San Antonio Light. (10/20/1991). Matamoros Couple Eyed in Monterrey Death. Retrieved 03/21/2026 from https://www.newspapers.com/image/1273597034/
Rivas, Maggie. (10/20/1991). Border Nightmare. Arizona Daily Star. Retrieved 03/23/2026 from https://www.newspapers.com/image/168178485/
Kiddle. (n.d.). Matamoros, Tamaulipas. Retrieved 03/23/2026 from https://kids.kiddle.co/Matamoros,_Tamaulipas
Britt, Hugo. (05/28/2021). What Are Maquiladoras, and How Are They Used by U.S. Manufacturers? Thomas. Retrieved 03/23/2026 from https://www.thomasnet.com/insights/what-are-maquiladoras/
Fly Bownsville. (n.d.). Explore Matamoros. Retrieved 03/23/2026 from https://flybrownsville.com/explore/matamoros-tamaulipas-mex/
Books
Frank, G. (2025). In MONSTERS; STRANGLERS AND BEASTS: 30 cases of Mexican serial killers (p. 34-35). Kindle Direct Publishing.
Podcasts
Mi Sospechoso Favorito. (02/24/2025). E57: Los Sadicos de Matamoros – Encarcelados.
Mino, Tania (host). (10/14/2020). Perfil Criminal. E126: Los sádicos de Matamoros – Rodolfo Infante Jiménez y Ana María Ruíz Villeda.
Music
“Abyss” by Alasen: ●https://soundcloud.com/alasen●https://twitter.com/icemantrap ●https://instagram.com/icemanbass/●https://soundcloud.com/therealfrozenguy●
Licensed under Creative Commons: By Attribution 3.0 License
“Latina” by Caslo. https://freemusicarchive.org/music/caslo/. Licensed under Creative Commons: By Attribution 4.0 License
“VVS” by Yung Kartz. https://freemusicarchive.org/music/Yung_Kartz. Licensed under Creative Commons: By Attribution 4.0 License
“Blue Scorpion” & “Furious Freak” by Kevin MacLeod. https://incompetech.com/music/royalty-free/full_list.php. Licensed under Creative Commons: By Attribution 4.0 License
https://creativecommons.org/licenses/by/3.0/
http://creativecommons.org/licenses/by/4.0/
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