Murderers Can Run, But They Can’t Hide From Their Forensic DNA Genealogy

Murderers Can Run, But They Can’t Hide From Their Forensic DNA Genealogy

Author: Robert Riggs October 27, 2022 Duration: 33:28

14-year-old Stephanie Anne Isaacson Prom Photo 1989

14-year-old Stephanie Anne Isaacson left her father’s apartment in North Las Vegas on June 1, 1989.

She walked through an empty sandlot, her usual shortcut, to the Eldorado High School.

The ninth grader never attended her 7:30 AM class at Eldorado High School.

Later that evening, officers found her body under a piece of discarded carpet in a sandlot that Isaacson used to take a shortcut to school.

Stephanie was the victim of a blitz attack. Her black shirt was pulled up, and her jeans pulled down. Her shoes and other belongings were missing.

The freshman with shoulder-length brown hair who had last been pictured with a wide grin in her prom picture had been sexually assaulted, bludgeoned, and strangled to death. 

Investigators had little to go on besides a tiny drop of semen found on the dead girl’s shirt.

They made numerous attempts to test the evidence but could not identify the killer.

Las Vegas Metropolitan Police investigators never gave up.

In late 2021, they submitted a DNA sample of a mere 15 human cells to Othram, a forensic genealogy lab in the Woodlands, a suburb of Houston.

DNA Analyst at Othram Examines Bone From An Unidentified Crime Victim

Othram’s DNA extraction technology found a relative of the alleged killer in a genealogy database that law enforcement has the consent to search.

Forensic genealogy led Las Vegas detectives to Darren Marchand, who had never been listed among suspects.

Darren Marchand

But Marchand had committed suicide at the age of 29, six years after the murder.

Issacson’s 32-year  case represents the tip of the iceberg of a silent mass disaster–a quarter million cold cases languishing across the United States.

But as we say in Texas, there is a new sheriff in town: a DNA lab built to solve cold cases.
Investigative Reporter Robert Riggs takes listeners of the True Crime Reporter® podcast inside Othram’s facility near Houston to find out how its trailblazing technology solves cases once thought to be unsolvable.


Link to the episode about how Othram helped solve the 47-year-old murder of Carla Walker


FOLLOW the True Crime Reporter® Podcast 

SIGN UP FOR my True Crime Newsletter

THANK YOU FOR THE FIVE-STAR REVIEWS ON APPLE Please leave one – it really helps.

TELL ME about a STORY OR SUBJECT  that you want to hear more about


Robert Riggs has spent decades as an investigative reporter, and in True Crime Reporter, he applies that relentless, document-driven approach to the stories that haunt us. This isn't just a retelling of grim headlines; it's a meticulous walk through active case files, historical injustices, and the societal undercurrents that allow crime to flourish. Each episode feels like you're sitting across from Riggs as he lays out his notes, connecting dots between evidence, witness accounts, and the often-overlooked details that change a narrative. You'll hear the tension in the pursuit of truth, the weight of unresolved questions, and the quiet impact on communities and families left in the wake of violence. The podcast moves beyond the sensational to examine the cultural and systemic factors at play, offering a sober, deeply researched perspective. Listen for long-form narratives that build like a detective's board, where every piece of audio, every interview, and every document serves a purpose. It’s for those who want to understand the 'why' and the 'how' as much as the 'who,' presented with the clarity and authority of a seasoned journalist who knows the terrain. This is a journey into real stories, handled with the care they demand, and it naturally becomes an essential listen for anyone fascinated by the intersection of human behavior, justice, and the news.
Author: Language: en-us Episodes: 100

True Crime Reporter
Podcast Episodes
From Convict To CEO — Turning Inmates Into Business Entrepreneurs [not-audio_url] [/not-audio_url]

Duration: 45:21
Many U.S. prisons are trade schools for crime. High recidivism rates underscore the failure of the current criminal justice system. Released and rearrested inmates pass through an expensive revolving door. The Texas pris…
Police Waited To Subdue Killer While Uvalde School Children Lay Dying [not-audio_url] [/not-audio_url]

Duration: 47:18
A 77-page report by a special committee of the Texas House of Representatives concluded that no one was able to stop the gunman from carrying out the deadliest school shooting in Texas history, in part because of “system…
A Love Triangle Ends In An Alleged Murderous Fit Of Jealous Rage [not-audio_url] [/not-audio_url]

Duration: 20:13
25-year-old Anna Moriah Wilson, known as “Mo” was an up-and-coming professional cyclist in gravel racing. Friends described her as a beacon and light and energy. But another cyclist, Kailin Armstrong allegedly snuffed ou…
The Watergate Scandal  — A Tale Of Bribery And International Intrigue [not-audio_url] [/not-audio_url]

Duration: 1:07:57
Many of you have asked how Robert became an investigative reporter. After all, most of the stories you hear on this podcast come from my reporter’s notebook. Riggs’ career path has zigged and zagged since I received a de…
Stop The Killing – How To End The Mass Shooting Crisis [not-audio_url] [/not-audio_url]

Duration: 58:41
Katherine Schweit headed up the FBI’s active shooter program, where she authored the bureau’s landmark research about mass shootings and how to respond best to save lives. In the wake of the massacre of children and thei…
She Butchered Her Sons And Took A Nap. She Was Freed To Kill. [not-audio_url] [/not-audio_url]

Duration: 43:00
For many years, Texas had a law and order image. Politicians campaigned for office about getting tough on crime. A gubernatorial candidate’s TV ads featured actors wearing black and white overalls swinging sledgehammers…
Jail House Romances: Why Do Women Fall In Love With Serial Killers? [not-audio_url] [/not-audio_url]

Duration: 34:15
Can you imagine yourself falling in love with a serial killer or murderer to the point you will give up your family, career, and even your life for them? A veteran Alabama jail officer, Vicky White, did just that in Apri…
The Greatest Escape From Texas Death Row Since Bonnie & Clyde [not-audio_url] [/not-audio_url]

Duration: 25:36
In this vintage photo 1993, Peabody Award-Winning Investigative Reporter Robert Riggs stands on a guard tower overlooking Texas Death Row. Poking up behind him to the right of the large spotlight is the steeple of the pr…