Morbid
Morbid

The Matamoros Devil Murders (Part 2)

May 25, 2026 • 54m

Summary

⏱️ 10 min read

Overview

Ash covers part two of the brutal 1989 murder of Mark Kilroy, a University of Texas student who was kidnapped during spring break in Matamoros, Mexico, and sacrificed by Adolfo Constanzo's drug-smuggling cult. The episode details the horrific discovery of 14 bodies at a ranch, the investigation involving supernatural cleansing rituals, and the eventual capture of cult members who believed they were protected by magic.

The Investigation Breaks Wide Open

After the caretaker Domingo Bustamante confesses and identifies Mark Kilroy from a photo, authorities bring in Little Serafine for intense interrogation. Commander Benitez uses psychological tactics, including placing soda water and hot sauce on the table as a threat. After five hours, Serafine breaks and reveals shocking details about the drug smuggling operation, their religious practices, and Mark's murder, confidently stating they killed for power and protection.

  • Caretaker Domingo Bustamante quickly folded and confirmed a young American man (Mark Kilroy) had been held at the ranch
  • Little Serafine confessed after seeing soda water and hot sauce on the interrogation table, revealing everything about the operation
  • Serafine stated: 'It was our religion, our voodoo. We did it for success, for protection. He told us killing would bring us power'
  • The interrogation took over five hours and revealed information authorities were not prepared to hear
" It was our religion, our voodoo. We did it for success. We did it for protection. He told us killing would bring us power. He told us our souls were dead. When that happens, you can do anything to anyone. "

Adolfo Constanzo and the Gang's Alliance

Serafine reveals that after family deaths, the Hernandez gang joined forces with Adolfo Constanzo, known as El Padrino. Constanzo forced them to adopt his perverted version of Palo Mayombe religion and became their powerful leader with connections to movie stars and congressmen. Serafine worshipped Constanzo but was also terrified of him, doing whatever he asked because of their religion and fear that Constanzo would kill them or worse.

  • After family members died, the Hernandez gang joined forces with Adolfo Constanzo (El Padrino) who forced them to adopt his religious practices
  • Constanzo was described as very powerful and smart with connections throughout Mexico to movie stars and congressmen
  • Serafine had immense respect for Constanzo but was also terrified, saying 'we did whatever he asked' or 'he would kill us or worse'
  • Constanzo demanded sacrifices for a trickster god called Elegua in exchange for powers and protection
" Adolfo is very powerful, very smart. He runs our business in Matamoros. He has connections all over Mexico. Movie stars go to him. Congressmen. "

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