Up in Flames - The Coulthurst Family Murders

Up in Flames - The Coulthurst Family Murders

From True Crimecast by Stove Leg Media

April 14, 2026 · 37 min · Episode 898

About this episode

The episode explores the horrific Coulthurst family murders and the investigation surrounding one of Alaska's worst mass homicides.

In September 1982, the Investor - a state-of-the-art salmon boat - was found drifting and engulfed in flames just off the coast of Fish Egg Island, Alaska. What the Coast Guard found in the embers was a nightmare: the remains of Mark and Irene Coulthurst, their two young children, and four teenage deckhands. It remains one of the worst mass homicides in Alaskan history. So who did it? Why did they do it? And where are they now?

Topics covered

  • mass homicide
  • Alaska
  • family murders
  • investigation
  • true crime

Keywords

  • Coulthurst family
  • mass homicide
  • Alaska
  • investigation
  • true crime
  • salmon boat
  • Coast Guard

Mentioned in this episode

Places: Fish Egg Island

More episodes of True Crimecast

Explore listener stats, chart rankings, contacts and more on the True Crimecast podcast page.