The Matamoros Devil Murders (Part 2)

The Matamoros Devil Murders (Part 2)

From Morbid by Ash Kelley & Alaina Urquhart

May 25, 2026 · 55 min · Episode 788

About this episode

The episode discusses the mysterious disappearance of Mark Kilroy in Matamoros, Mexico during spring break in 1989.

(Part 2 of 2). Visit https://www.markkilroyfoundation.org If you would like to donate to the Mark Kilroy Foundation. In March 1989, twenty-one-year-old University of Texas student Mark Kilroy and some friends traveled south of the border to Matamoros, Mexico to celebrate the end of spring break, along with thousands of other American students that year. After drinking all night at a bar on the night of March 10, Kilroy got separated from his friends when they decided to call it a night a little after 2:00 am. No one would see Mark Kilroy alive again. As one of several towns bordering the United States, Matamoros was popular with American tourists; however, by the late 1980s, it was beginning to develop a reputation for drug-related crime. In fact, Mark Kilroy was just one of sixty people who went missing in Matamoros in just the first three months of 1989 alone. When Kilroy’s friends reported him missing to the Brownsville, Texas police a massive search began, with investigators fearing Mark might have been kidnapped by one of the local gangs. It turned out, the truth was far worse than anyone had feared.

People in this episode

Hosts: Ash Kelley, Alaina Urquhart

Topics covered

  • true crime
  • disappearance
  • drug-related crime
  • investigation
  • 1980s
  • Matamoros

Keywords

  • Mark Kilroy
  • Matamoros
  • disappearance
  • true crime
  • 1989
  • investigation
  • drug crime

Mentioned in this episode

Organizations: Mark Kilroy Foundation

Places: Matamoros, Texas, University of Texas

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