
This episode covers the 1987 murder of Donna Sue Hyatt in Carlsbad, New Mexico, the investigation into her death, and the use of investigative genetic genealogy to identify her killer, Michael Ruff Wigley.
Donna Sue Hyatt, a 38-year-old mother, was discovered murdered in her home by her daughter, Angie. The crime scene revealed signs of a violent struggle, and initial investigations led to a series of suspects over the years.
Despite the passage of time and advancements in DNA technology, the case went cold until a new cold case team reopened it in 2020. They utilized investigative genetic genealogy, a method that connects DNA evidence to family trees, to identify potential suspects.
Through this technique, detectives narrowed down the suspect to Michael Ruff Wigley, who had a history of violence against women and was deceased. The episode details the exhumation of his body to confirm a DNA match with evidence from the crime scene.
The episode concludes with the emotional impact of finally identifying Donna Sue's killer and the ongoing hope that Wigley may be linked to other unsolved cases.
Investigative genetic genealogy identifies Donna Sue Hyatt's killer, Michael Ruff Wigley, in her 1987 murder case after decades of investigation.

This episode stands out for the following:
I think her last moments were very violent.The Murder on Elm Street | Bloodline Detectives with Nancy Grace
All of those years, it just ate at me.The Murder on Elm Street | Bloodline Detectives with Nancy Grace
It was a relief because it's something you think about all the time.The Murder on Elm Street | Bloodline Detectives with Nancy Grace
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