Retired cold case investigator Paul Holes used genetic genealogy to find a suspect in the Golden State Killer case. He breaks down what a centimorgan is, why it can be important, and how genetic genealogy can be used by law enforcement.

Paul Holes and Yolanda McClary investigate a double homicide that’s left a small town in Iowa spooked for nearly forty years. But his quest to bring justice to the families of Rose Burkert and Roger Atkison will lead him to an unexpected discovery.

In “The DNA of Murder with Paul Holes,” the retired cold case investigators looks into unsolved or cold cases. He explains how he approaches looking into an offender’s behavior.

Emotional clues can be woven into the evidence of a crime scene. Retired cold case investigator Paul Holes breaks down how he looks at the emotions expressed and what it can mean for investigators.

In Oxygen’s “The DNA of Murder with Paul Holes,” the retired cold case investigator goes back to crime scenes even if years have passed or the buildings have changed. Holes explains why it can be helpful when looking at the evidence.

Paul Holes may be known for helping find the alleged Golden State Killer, but he is just getting started bringing criminals to justice.

Investigator Paul Holes and former prosecutor Loni Coombs visit the former residence of Kay Wenal, who was killed at her Georgia home in 2008. At the time of her murder, Kay Wenal was married to millionaire real estate developer Hal Wenal. Kay had been punched in the face, and her throat had been slashed.

Investigator Paul Holes and former prosecutor Loni Coombs investigate the murder of Kay Wenal, wife of a millionaire businessman. She’s killed in her home in the middle of the afternoon. Was this a financially-motivated crime or did Kay have a secret life that led to her death?

Seasoned investigator Paul Holes meets with the Iowa County Sheriff's Office to discuss the cold case of Roger Atkinson and Rose Burkert, who were bludgeoned to death at the Amana Holiday Inn in September 1980. Serial killer Charles Ray Hatcher, the uncle of Atkinson's widow, Marcella Shat, was investigated, but he was in another state at the time of the murder.

From the Golden State Killer to the Grim Sleeper, these cold cases heated up with breakthroughs in forensic genealogy.

Seasoned investigator Paul Holes and crime scene investigator Yolanda McClary visit the Amana Holiday Inn near Williamsburg, Iowa, where couple Roger Atkinson and Rose Burkert were bludgeoned to death in September 1980. They were both found facedown in their hotel bed, and investigators later determined they had been killed with an ax or hatchet.

Seasoned investigator Paul Holes and crime scene investigator Yolanda McClary look at the crime scenes of Charles William Kyle and Jack McDonald, two young men who had murdered in hotel rooms 10 years apart. Holes thinks the cases could be related to the double homicide of Roger Atkinson and Rose Burkert, who were killed in September 1980 at the Amana Holiday Inn near Williamsburg, Iowa.

Seasoned investigator Paul Holes believes one man could be responsible for the cold case slayings.