The case had haunted Fort Worth for decades, a murder that refused to yield its secret. Sherry Joe Elliott had been attacked and killed in 1983, and for years the investigation went nowhere. The DNA evidence collected from her dress sat quietly in a lab, waiting for a technology that did not yet exist. Then, years later, a new tool emerged that promised to breathe life into cases long gone cold: forensic genetic genealogy, the science of tracing family trees through DNA.
Investigators believed it could turn dormant evidence into a name, but everyone involved understood that the process would not produce an answer by itself. It would produce a thread, nothing more. The real work would begin after that thread was pulled. The technique worked like this.
Investigators built a DNA profile from the crime scene. They ran that profile through a genetic genealogy database, comparing the unknown person’s DNA against hundreds of thousands of other profiles. The search returned a list of genetic relatives, people who shared enough DNA to suggest a family connection to the person who left their mark at the crime scene. To understand those connections, researchers built family trees from public records and genealogy databases, sorting the relatives by generation and working out how they fit together.
Then came the delicate task of figuring out where the unknown DNA donor belonged in that tree. In the Sherry Joe Elliott case, the process produced a name: Ronnie Collins. He was seventy-five years old by the time investigators found him, and in his early thirties when the crime was committed. That fit.
He was in the area at the time, too. But there was no known connection between him and the victim. That did not end the inquiry. It simply meant the investigation had to move forward carefully, using its strongest available technique: watching, waiting, and gathering evidence without alerting the suspect.
The first step was a conversation. As investigators worked through the list of potential leads, they identified a man who owned a Ruger . 22 pistol, the same type of weapon involved in the case. The man was cooperative, just as Ronnie Collins would appear to be at first.
In April 1974, he spoke with police and offered his version of events. But in the Collins case, the initial contact went differently. Investigators called him, asked to speak generally about the case, and arranged a meeting. The interview was set.
Collins stalled through the holidays, but eventually agreed to meet. Law enforcement set up the location and waited. He never showed up. A man who had seemed willing to talk suddenly went silent.
For investigators, that shift was meaningful. It did not prove guilt, but it raised the stakes. They now had a lead that looked more and more like something worth pursuing. There were two ways to confirm whether a suspect’s DNA matched the crime scene.
The first was a voluntary sample. In the case of Carla Walker, a woman who was abducted, raped, and murdered in 1974, investigators approached the man identified through genetic genealogy and asked directly. They explained that providing a DNA sample would allow them to rule him out if he was not involved. The man suggested he had already given a sample back when the crime happened.
His wife corrected him, gently, noting that DNA testing did not exist in 1974. He agreed, and the voluntary sample moved the case forward. But voluntary cooperation was not guaranteed. In the Elliott case, Collins made it clear that a straightforward request would not work.
That left the second method: forensic investigators could collect discarded items from public trash, anything that might contain DNA, and compare it against the crime scene sample. This technique, sometimes called trash collection, had limits. It could establish a match, but it did not prove the chain of custody. The evidence could not stand alone in court.
What it could do was give investigators probable cause to seek a warrant for a direct, court-ordered sample. That is what happened in the Elliott case. Investigators gathered discarded items from Collins’s garbage and sent them to the laboratory that had handled the original testing. The lab found a match on a McDonald’s drinking straw.
That match gave them enough to request a warrant to compel Collins to provide a direct DNA sample. When that test came back, it matched the crime scene DNA as well. The confirmation transformed the investigation. A thread had become something harder.
It still did not answer every question. A DNA match meant the person’s biological material was present at the crime scene, but it did not automatically prove involvement. Investigators still had to determine whether that presence was tied to the crime itself. That determination required a different kind of work, namely interviewing, corroborating details, and building a case before an arrest.
In the Collins case, the evidence from the sexual assault was strong enough that the case could be closed around him. He was identified, in the end, as the man who most likely attacked and killed Sherry Joe Elliott. But Ronnie Collins never faced a trial. On the day he was supposed to meet with investigators, he was found dead by suicide.
His wife told the officers who arrived at the house that he had ended his life on the very day the interview was meant to take place. His DNA was collected during the autopsy, and the state laboratory confirmed without question that the genetic material found on Sherry Joe matched him. The case was resolved through the work of forensic genetic genealogy, but the accused never answered for his crime in a courtroom. The transcripts of these investigations reveal a deeper truth about how this technology works in practice.
Investigative genetic genealogy produces leads, not verdicts. It narrows a vast pool of possibilities down to a single name, but that name is only the beginning. The process demands follow-through. In the Walker case, the genealogy pointed to a woman in Wichita, Kansas, who appeared to be related to the suspect.
Her family tree led to Glenn Samuel McCurley, a man who owned a Ruger . 22 and had been interviewed by police in 1974. But McCurley had died in 1972, two years before the crime. That did not end the inquiry.
It shifted it. Investigators asked whether McCurley had sons, and the answer was yes. He had three boys. Two of them were alive in 1974.
One of them, Glenn Samuel McCurley Jr. , was living in Fort Worth at the time the other brothers were elsewhere. That detail mattered. Investigative genetic genealogy could not distinguish between the brothers on its own, since siblings share a large portion of their DNA.
The technique could narrow the search to a family, but only old-fashioned detective work could decide which member of the family belonged in the story. So officers went to the McCurley home. The man they wanted was in the backyard. He protested that he had nothing and was doing nothing.
The officer identified himself as police. Decades had passed since the crime, but the McCurley family was the only family living in that house, and they had been there for years. The pieces began to align, and investigators grew increasingly confident that McCurley had been involved in the assault and murder of Sherry Joe Elliott in 1983. Taken together, these cases show the double edge of forensic genetic genealogy.
It is a force multiplier for criminal investigation, a way to connect decades-old evidence with living people who never expected to be named. But the technique can only go so far. It cannot determine guilt. It cannot distinguish between brothers or explain why someone’s DNA ended up at a crime scene.
It produces a research lead, as investigators repeatedly emphasized, and that lead must be supported by further testing, evidence, and investigation before a case can move toward arrest and prosecution. The experts interviewed in these investigations made the point plainly: the process produces no suspects, only possibilities that must be tested against the facts of the case, the timeline, the geography, and the DNA itself. In the end, the story of Sherry Joe Elliott’s murder is a story about patience and procedure. The original crime was never abandoned.
The physical evidence was kept safe for decades. When the right technology finally arrived, it did not solve the case on its own. It gave investigators a direction, a way to sort through thousands of people and find one name. From there, the work was careful, methodical, and bounded by the limits of the law.
The DNA match on a discarded straw, the warrant, the autopsy, the confirmation, each step built on the last until the case could finally be closed. Ronnie Collins was identified as the man who attacked Sherry Joe Elliott. He never stood before a judge, and his death ended the possibility of prosecution. But the case was resolved, not by guesswork, not by confession, and not by chance.
It was resolved by turning a single thread of genetic information into a finished investigation.