Solved via IGG NAMUS: UP250 (SOLVED) • DOE NETWORK: 142UFNV • AGENCY CASE: HPD-80-04432 • JURISDICTION: Henderson Police Department Cold Case Unit, NV

Tammy Terrell (Arroyo Grande Doe): Solved in 2021

The 41-Year Henderson Desert Enigma Solved: How Othram genomics and Henderson Police restored the name of Tammy Lee Terrell.

Archival Case File Banner: Tammy Lee Terrell (
SECTION 1: THE OFFICIAL CASE RECORD (VERIFIED FACTS)
Official Case Date October 5, 1980 (ID'd December 2, 2021)
Discovery / Last Seen Location Arroyo Grande Blvd & Lake Mead Dr, Henderson, Clark County, NV
Demographic Profile Caucasian Female, 17 Years Old (5'2", 105 lbs)
Anthropological Age Estimate 17 Years Old (DOB: July 4, 1963)
Primary Investigating Agency Henderson Police Department & Othram Inc.
Forensic Identifiers Available Forensic-Grade Genome Sequencing, Roswell State Fair Disappearance, Left Calf Scar

On Sunday, October 5, 1980, in a desert culvert near Arroyo Grande Boulevard and Lake Mead Drive in Henderson, Clark County, Nevada, two men driving off-road dirt bikes discovered the body of a teenage girl. She had been brutally beaten with a bladed two-by-four plank and stabbed over thirty times. For forty-one years, she was known across the Southwest as "Arroyo Grande Jane Doe."

Discovery, Clothing & Autopsy Findings

The victim was estimated to be between 14 and 18 years old, standing 5 feet 2 inches tall and weighing 105 pounds, with hazel-green eyes and bleached blond hair. She was found dressed in blue jeans, a yellow-and-white striped button-up blouse, and nylon socks, but lacked shoes.

Pathologists documented catastrophic blunt force trauma to the skull and deep puncture stab wounds to the back and chest. Distinctively, she had a small round scar on her left calf and an un-pierced left ear, with dental charts indicating all four wisdom teeth were present and intact.

Chronological Case Timeline

Date / Year Location Event / Investigative Milestone
Oct 5, 1980 Arroyo Grande Blvd, Henderson, NV Body discovered in desert culvert; dubbed "Arroyo Grande Jane Doe."
1980 Clark County, NV Buried in Henderson Cemetery in a grave marked with a numbered concrete plaque.
2003 & 2015 NCMEC Reconstructions Forensic artists create digital reconstructions viewed millions of times.
2020 The Woodlands, TX Henderson Police Department sends skeletal remains to Othram Inc. for FGGS sequencing.
Dec 2, 2021 Henderson, NV Police Chief Thedrick Andres announces she is 17-year-old Tammy Lee Terrell of Artesia, NM.
SECTION 2: PROMINENT COMMUNITY THEORIES & ANALYTICAL HYPOTHESES
Investigative Ethics & E-E-A-T Guarantee: This analytical section examines documented community theories, crowdsourced timeline comparisons from verified cold-case forums (Websleuths, Reddit r/UnresolvedMysteries, Doe Network), and geographic distribution models. In strict accordance with our nonprofit charter, no living unindicted private citizens are named or accused. All hypotheses evaluate physical markers, transportation corridors, and anatomical evidence.

The Othram Resolution: Tammy Lee Terrell

In 2020, Henderson Police Detective Joe Lawrance partnered with Othram Inc. Using Forensic-Grade Genome Sequencing (FGGS), Othram technicians overcame four decades of desert heat degradation to extract nuclear DNA and construct a full SNP profile.

Genealogists identified distant cousins clustering in southeastern New Mexico. On December 2, 2021, Henderson Police announced that Arroyo Grande Jane Doe was 17-year-old Tammy Lee Terrell of Artesia, New Mexico.

Tammy was last seen on September 28, 1980, leaving a state fair in Roswell, New Mexico with an unidentified Caucasian man and woman in a white luxury vehicle. Henderson homicide detectives are actively investigating serial killer travel corridors between New Mexico and Las Vegas along Highway 93 to identify her killers.

SECTION 3: LAW ENFORCEMENT SUBMISSION & OFFICIAL TIP LINE

Have Information Concerning This Investigation?

Even the smallest detail—a recollection of a vehicle, a seasonal acquaintance, or an old photograph—can provide the missing link to solving a multi-decade cold case. All leads submitted through official channels are cross-referenced with state databases and active forensic profiles.

Henderson Police Department Cold Case Unit
(702) 267-4750
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Crime Stoppers of Nevada
(702) 385-5555
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FBI ViCAP (Violent Criminal Apprehension)
1-800-CALL-FBI
OFFICIAL CASE CODES: NamUs: UP250 (SOLVED) • Case Docket: HPD-80-04432. Reference these identifiers when submitting information.
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