The 2001 Maryland Cold Case Solved by a Romanian DNA Match

In 2024, two detectives from the Montgomery County Police Department sat down with a woman named Lauren Preyer and said a name. Lauren recognized it. She did not hear it the way you hear a stranger’s name in a news report. She heard it the way you hear a name attached to a specific face, a specific history, a specific place in your memory.

 And the moment those two detectives said it, 23 years of waiting collapsed into a question she was not prepared to answer. This is the story of how a murder committed in one of the most affluent suburbs outside Washington, D.C. in May 2001 went unsolved for 23 years, and how a forensic DNA trail that crossed the Atlantic Ocean from Maryland to Romania eventually produced a name that Lauren Preyer already knew.

There was no forced entry on the morning Leslie Preyer was killed. She opened the door. She let someone in. And beneath her fingernails, because she fought, she left behind a biological record of the person who murdered her. That evidence sat in storage for 21 years before a laboratory in Texas read it and built a family tree that stretched across two continents.

 What came back was not a stranger. That is what this case is about. Leslie Ann Preyer was born on October 5th, 1952. She was 48 years old when she was murdered. She lived on Drummond Avenue in Chevy Chase, Maryland. A quiet neighborhood of wide streets and established houses just over the border from Washington, D.C.

 The kind of community where people know their neighbors’ names and leave their doors unlocked during the day. Leslie was known in that community. She was involved. She gave her time to philanthropic causes. She was, by every account from the people who knew her, exactly the kind of person you would expect to find in that neighborhood.

 Present, generous, connected to the people around her. She worked at a production company called Specialties Inc. and was known as someone whose presence was reliable and whose absence was immediately noticeable. She was married to Carl Sandi Preer. Her daughter Lauren was away at college. That detail, Lauren away, the house quieter than it usually was, sits in the background of what happened on May 2nd, 2001.

Without adding anything to the explanation, it just means that when Leslie opened her front door that morning, she was alone. Her boss noticed she had not shown up for work before mid-morning. She was not answering her phone. That kind of absence was out of character enough that he called Sandy directly rather than waiting.

Sandy and a colleague agreed to go to Drummond Avenue together to check on her. They arrived around 11:35 in the morning. Officer Jim Barnett of the Montgomery County Police Department was the first officer on scene after their 911 call. He said later that from the moment he stepped inside, it was clear there had been a violent struggle.

Blood was spattered on the walls near the front door and smeared across the foyer. Furniture had been overturned. A rug soaked in blood had been dragged from the entrance into the living room. Leslie Preer was found murdered inside her home. The forensic examination produced two findings that shaped the entire direction of the investigation.

First, there was no sign of forced entry, no broken lock, no damaged door frame, nothing suggesting anyone had come in by force. She had opened the door voluntarily. Second, investigators recovered DNA from beneath her fingernails. The struggle had been close and sustained. She had fought hard enough and long enough to leave her attacker’s biological material under her nails, a detail that in 2001 felt like the the of an answer.

That DNA was profiled and entered into CODIS. No match came back. What followed over the next two decades was the particular kind of investigative patience that cold cases demand and rarely receive. The Montgomery County Cold Case Unit returned to the Preer file repeatedly as forensic technology advanced.

 DNA databases grew. CODIS added profiles from new convictions every year, and the file was run against new entries routinely. Each time, the result was the same. The profile beneath Leslie Preer’s fingernails matched nobody in the system. In the early years of the investigation, detectives pursued leads across the DC suburban area.

 Leslie’s social circle, her professional contacts, anyone who might have had a grievance or a reason to appear at her door. The absence of forced entry was both the most useful and most frustrating piece of evidence. It confirmed the killer was known to her, which narrowed the field, but it did not name anyone specific.

As the years passed and every known lead was exhausted, the case became what investigators call a true cold case. Evidence intact, profile real, suspect pool empty. Detectives Tara Augustine and Allison Du Puy were assigned to the case as part of Montgomery County’s Cold Case Section. They made a decision that was not standard procedure and not required of them.

 They maintained a personal relationship with Lauren across the full span of the investigation. When they tried a new technology and it produced nothing, they called Lauren. When a submission came back inconclusive, they called. When the case went quiet for months at a time because there was simply nothing new to try, they stayed in contact anyway.

Lauren did not navigate those years without information. Two detectives had decided she was part of the investigation, not a peripheral figure to be updated occasionally, but someone whose understanding of the case mattered. In September 2022, Augustin and Dupuy submitted the blood evidence from the crime scene to Authram, a private genome sequencing laboratory in The Woodlands, Texas.

 Authram had developed specific expertise in extracting viable DNA profiles from biological material that had degraded or been stored for extended periods. They used forensic grade genome sequencing techniques that operated on older and more challenging samples than conventional forensic labs could handle. The evidence submitted included the biological material scraped from beneath Leslie Prieto’s fingernails in 2001, 21 years in storage, still viable.

Authram built a complete DNA profile from that biological material. The profile was uploaded to consumer genealogy databases, platforms where individuals voluntarily submit their genetic information to locate relatives, trace ancestry, and connect with distant family branches. The search looked for partial familial matches, not a direct hit on the suspect, but a thread of shared genetic material pointing toward a biological family.

What came back pointed not to Maryland, not to anywhere in the continental United States in any direct sense. The strongest familial connection in the database led to a family lineage that had originated in Romania. Forensic genetic genealogy does not need the suspect’s own DNA in any law enforcement system.

 It needs a relative, a cousin, a distant branch of the family tree, who voluntarily submitted their genetic data to a consumer platform. When that partial match appears, genealogists build the family tree outward from that relative using immigration records, naturalization documents, census data, marriage and birth records, and publicly available genealogical information in both the country of origin and the country the family eventually settled in.

A family that emigrated from Romania to the United States left a paper trail across two continents and multiple decades. That trail can be followed forward from Romania through the branches of the family’s American descendants until it narrows to an individual who matches the age, geography, and circumstances of the crime.

 In June 2024, Detective Augustin searched publicly available records, news articles, and genealogical documents about the individuals connected to the Romanian match. She traced the family’s migration from Romania to the United States. She worked through the American branches of the family tree, identifying members by geography, age, and background.

 One individual matched the profile in every relevant dimension, the right age, living in Maryland with a history that connected to the Pryor household. His name was Eugene Teodor Gligor. He had emigrated from Romania and had been living in the United States for years. Long enough to have built a life in Maryland, long enough to have appeared in Lauren Pryor’s past before the murder.

Detectives collected his DNA in June 2024 and sent it for comparison against the profile built from Leslie Pryor’s fingernails. The match was confirmed. The DNA trail that had started beneath a woman’s fingernails in 2001, been entered into a national database, and produced nothing for 21 years, been submitted to a Texas laboratory in 2022, traced across the Atlantic to a Romanian family tree, and built branch by branch through genealogical records across two years, had ended with a man in the same county where the murder had happened.

Then Augustin and Dupuy called Lauren. Across 23 years, they had called with updates that ranged from hopeful to discouraging to simply informational. This call was different. They had a name, and when they said it, Lauren Pryor already knew it. 21 years of DNA submissions that produced nothing. A genealogy database that pointed to Romania, a family tree built across two continents, and the name that came back from all that work was someone Lauren had once brought into her home.

 If this channel is for you, subscribe before we get to who Eugene Gligor was to this family. Eugene Teodor Gligor had been Lauren Prier’s high school sweetheart, her ex-boyfriend, a young man who had been a regular presence in the Prier household Lauren brought him there, who had sat at Leslie Prier’s dinner table, been a guest under her roof, attended the kind of family occasions that leave an impression.

He was not an acquaintance. He was not a peripheral figure. He was someone the family had known in the particular way families come to know the people their children love, with the specific familiarity that comes from shared meals and shared space, and the assumption of trust. Return to what the crime scene told investigators in May 2001.

 No forced entry. She opened the door. That detail was stated earlier in this video as a forensic observation. The kind of finding that tells investigators the killer was someone known to the victim. It carries different weight now. Leslie Prier opened her front door on the morning of May 2001 because she had no reason not to.

The person on the other side of that door was someone she recognized, someone she had welcomed into her home before, someone who had been in her daughter’s life. She may have been surprised to see him. She may not have been. Either way, she opened the door. The absence of forced entry is not just a forensic category in this case.

 It is the specific moment that this specific history made possible. Eugene Gligor had carried the knowledge of what he had done from May 2001 to June 2024. 23 years. He had lived in the United States, continued his life in Maryland, while Lauren grew up without her mother and received phone calls from two detectives who refused to close the file.

 That coexistence, a daughter waiting for a name while the man who held it continued his life in the same state, is the specific cruelty this case carries beyond the murder itself. Following the DNA confirmation, Gligor was arrested in 2024. He pleaded guilty to the murder of Leslie Prier. He was sentenced to 22 years in prison.

 Lauren Prier attended the proceedings. The daughter who had been updated across 23 years of failed technology and exhausted leads was in the room when the verdict was delivered. Dateline NBC and ABC News 2020s had both aired episodes on the case in 2025 featuring Lauren’s account of the investigation and the detectives account of how they had maintained contact with her throughout.

The case had reached the kind of public profile that cold cases reach when the resolution is real and the human story beneath it refuses to be reduced. Eugene Gligor had sat at this family’s dinner table. He had been part of Lauren Prier’s life and for 23 years after killing her mother, he existed while she waited for his name.

 DNA crossed the Atlantic. A genealogy tree built from Romania to Maryland produced what 21 years of CODIS searches could not. If you want to stay with cases like this, subscribe. The America’s greatest detective award presented to Tara Augustin and Allison DuPuy at CrimeCon in Las Vegas this weekend is the formal world recognizing what they did on this case.

The recognition is accurate, but the thing their work produced that matters most is harder to quantify than an award. Lauren Prier did not spend 23 years in the dark. She spent them informed, connected, included in an investigation that refused to treat her as a secondary consideration. That is not standard practice.

It is a choice two people made repeatedly across two decades. The technology that finally broke the case, forensic genetic genealogy run through Autheram’s genome sequencing system, traced through a Romanian family tree, confirmed against a 21-year-old biological sample, is extraordinary. It represents everything this channel documents.

 The patient accumulation of forensic science until it is good enough to answer questions that earlier decades could not. The evidence was always there. The biological material under Leslie Preer’s fingernails was always there, always real, always pointing toward a specific person. What changed was the world’s ability to read it. Lauren Preer has spoken publicly about what it meant to finally have a name.

She described keeping a photograph of her mother visible in her home. She described the specific grief of a case that stays open, the difference between knowing someone is gone and not knowing why, or who, or whether anyone will ever be accountable. She described what it was like to hear Eugene Gligor’s name from the detectives who had been calling her for 23 years.

 The name she already knew, the face she could picture, the person who had been at her mother’s table. DNA crossed an ocean to find him. Two detectives spent 23 years making sure Lauren was never alone in the wait. And at the end of all of it, the answer was someone who had been there from the beginning, in the household, in the memories, in the specific history that made it possible for Leslie Preer to open her front door on a May morning in 2001 without any reason to be afraid.

There is no clean resolution to what that means for Lauren. There is a verdict. There is a sentence. There is a name attached to the case file that has been open since her mother did not show up for work 23 years ago. What she does with the knowledge of who that name belongs to is something no forensic advance can address.