INVESTIGATIVE CASE DOSSIER: THE 1979 MURDER OF KIM BRYANT: HOW OTHRAM DNA SOLVED LAS VEGAS COLD CASE AFTER 42 YEARS
- Victim: Kim Marie Bryant (Age 16; High School Student)
- Date of Abduction: January 26, 1979 (Waiting at Dairy Queen on West Sahara Ave)
- Discovery Location: Desert area near Buffalo Drive and Washington Ave, Las Vegas, NV
- Perpetrator: Johnny Blake Peterson (Born 1960; Died 1993)
- Cause of Death: Blunt force trauma to the head following sexual assault
- Breakthrough Method: Forensic-Grade Genome Sequencing (FGGS) & Genetic Genealogy (Othram)
- Date of Identification: November 29, 2021 (Publicly announced by LVMPD)
- Status: Perpetrator deceased in 1993; Case officially cleared by exception
On January 26, 1979, 16-year-old Western High School student Kim Bryant was waiting for her boyfriend at a Dairy Queen on West Sahara Avenue in Las Vegas when she was abducted in broad daylight. Three weeks later, her body was discovered in an undeveloped desert wash. For forty-two years, the homicide remained one of Las Vegas’s most heartbreaking unsolved mysteries. In November 2021, Las Vegas Metropolitan Police (LVMPD) and Othram announced that advanced genomic sequencing had identified the killer as 19-year-old Las Vegas resident Johnny Blake Peterson.
The 1979 Abduction on West Sahara Avenue
Sixteen-year-old Kim Bryant was last seen around 11:00 AM outside the Dairy Queen across from Western High School. When her boyfriend arrived to pick her up, Kim had disappeared, leaving only her school books.
On February 20, 1979, utility workers discovered Kim’s remains in the desert northwest of Las Vegas. Autopsy findings revealed she had been assaulted and beaten to death. Biological evidence was preserved and stored by LVMPD criminalists.
The 2021 Othram Genomics Breakthrough
In mid-2021, LVMPD Cold Case detectives partnered with Othram, a pioneering forensic sequencing laboratory in Texas, funded by local philanthropist Justin Woo. Othram scientists applied Forensic-Grade Genome Sequencing (FGGS) to extract an actionable SNP profile from degraded biological material.
Othram’s in-house genetic genealogists constructed comprehensive family trees, tracing living relatives in Nevada and California and identifying Johnny Blake Peterson as the sole candidate matching the forensic and geographic profile.
Confirmation and Closure
Investigators obtained reference DNA from Peterson’s surviving biological relatives, confirming a 100% conclusive match to the 1979 crime scene DNA. Records showed Peterson was 19 years old and lived in Las Vegas at the time of Kim’s murder.
Although Peterson died in 1993, the identification provided definitive closure to Kim Bryant’s family and demonstrated how privately funded genomic sequencing can resolve historical cold cases.
Case Timeline & Key Forensic Milestones
| Date / Year | Milestone / Event | Forensic Significance |
|---|---|---|
| Jan 26, 1979 | Kim Bryant abducted outside Las Vegas Dairy Queen | Body discovered Feb 20 in desert wash |
| 2021 | LVMPD sends evidence to Othram | Othram extracts SNP profile via FGGS technology |
| Nov 29, 2021 | LVMPD announces Johnny Blake Peterson as killer | 42-year cold case cleared by exception |
Frequently Asked Questions (FAQ)
Who killed Kim Bryant in 1979?
Johnny Blake Peterson, who was 19 years old and living in Las Vegas at the time of the murder, was identified through Othram DNA sequencing.
How was Johnny Blake Peterson identified?
Othram used Forensic-Grade Genome Sequencing and genetic genealogy to identify Peterson, whose relatives’ DNA confirmed the match in 2021.
Is Johnny Blake Peterson alive?
Peterson died in 1993, so the case was officially cleared by exception by Las Vegas Metro Police.
