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You are here: Home / Shows / How A Single Hair Caught A Killer

November 1, 2022 By Robert Riggs Leave a Comment

How A Single Hair Caught A Killer

Podcast: Play in new window | Download (Duration: 34:31 — 47.5MB)

In the previous episode, we showed how homicide detectives solved 50-year-old cold cases.

They analyzed old evidence using new DNA extraction technology pioneered by Othram, a forensic genealogy lab in Texas.

Othram provided new leads by finding relatives of suspects on genealogy databases.

As revolutionary as that seems, it was just a few years ago that the FBI pioneered the use of mitochondrial DNA in a Texas murder case.

Mitochondrial DNA is handed down from mother to child, so it can only tell you about your maternal ancestors.

In a landmark case, former U.S. prosecutor Bill Johnston used the mitochondrial DNA from a single hair to send a killer to prison for the rest of his life.

Here’s the backstory of how he did it. 


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