DNA Identified the Suspect. He Wasn’t Arrested for 11 More Years.

On the morning of September 9th, 1988, a woman was found dead inside a small office building in downtown Orlando. Her face was so badly damaged that a co-worker who knew her personally could not tell who she was looking at. Not at first. The only way anyone could confirm who she was was her hair. She wasn’t even supposed to be working that shift.

 She was covering for someone else. A favor, nothing more. And that favor was what led to her end. Her name was Diane Matthews. She was 43 years old. It would take 38 years and a kind of science that didn’t exist yet to find out who did this to her and why. Diane grew up in College Park, one of Orlando’s older residential neighborhoods. She went to Edgewater High School.

She got married, had three kids, and built a quiet working life. By 1988, she was working at a telephone answering service in downtown Orlando on North Magnolia Avenue. Diane didn’t usually work nights, but on September 8th, 1988, a co-worker needed the evening off, and Diane said yes. She went in, sat at the desk, and started answering calls for businesses that had already closed for the day.

She had no way of knowing the decision would be the last one she made. What happened next has never been told in full because there were no witnesses. But investigators pieced together enough physical evidence to understand roughly what happened. At some point that night, someone came up to the second floor. Diane was there doing the job she’d agreed to cover.

Whoever came up those stairs didn’t belong there. According to a co-worker who knew her personally, Dianne realized this right away. She tried to close the office door. Whoever was on the other side didn’t let her. The door kept moving. Dianne kept trying to hold it shut. At some point, the person on the other side pushed hard enough that her body was driven into the wall behind her.

Hard enough to leave a mark there. Proof of how much force was used and how hard she fought to keep that door closed. She lost that fight. She was beaten and she was strangled in that office by someone who left before anyone else arrived. Nobody found her until the next morning. When Orlando police arrived, they were looking at one of the most brutal homicides the department had handled.

Detectives did what detectives in 1988 could do. They dusted for fingerprints. They collected physical evidence from the scene, including biological material left behind. They interviewed people who knew her and anyone who might have seen something on Magnolia Avenue that night. But 1988 was a different era for forensic science.

DNA testing existed, but it wasn’t yet a standard tool in police work. It was slow, expensive, and rarely used outside the most high-profile cases. There was no national database to run a profile against, even if you had one. So, investigators preserved what they’d collected and kept working the leads they had.

None of those leads went anywhere. There was no confession, no sketch that led anywhere, no name that kept coming up. Diane Matthews murder went cold. Saying a case went cold is easy. It meant something different for the people who knew her. One of her co-workers, a woman named Irene Simon, later said she thought about Diane for years.

Not as a case number, as a person, as someone she had known. The 1990s passed. The 2000s passed. The evidence from that office sat in storage waiting for a kind of science that didn’t exist yet in 1988. Cold cases don’t stay in the news. They don’t get worked every day. What they get, if an agency is doing its job properly, is patience.

Someone keeping the file. Someone making sure that if the science ever caught up, the evidence would still be there to test. That patience is the only reason anything happened at all. Because what eventually broke this case open didn’t begin in Orlando. It began somewhere else entirely, in a case that had nothing to do with Diane Matthews.

More than two decades after Diane’s murder, in North Carolina, a man was arrested. The charge had nothing to do with Florida, and nothing to do with a homicide. It involved a sexual offense against a minor. As part of that arrest, a DNA sample was taken and entered into the national system law enforcement agencies use to compare DNA profiles against each other, even across state lines and years apart.

That sample sat in the system. At some point, it was compared against the profile taken from the scene of Diane Matthews’ murder in 1988. It came back as a potential match. For the first time in over two decades, Orlando detectives had a name. In 2013, Orlando detectives traveled to interview him. They asked him directly if he knew Diane Matthews.

He said no. They asked him to provide a DNA sample to compare directly against the evidence from the scene. He refused. For reasons that were never fully explained, the case didn’t move forward from there. The database had already flagged him as a potential match. Investigators had a name and a location, and more than a decade would pass before anyone went back to ask him again.

In 2024, Orlando detectives went back. This time, when they sat down with him again, he agreed to give a DNA sample voluntarily. Nobody outside that room knows exactly why he changed his answer. What matters is that he did, and the sample went to the Florida Department of Law Enforcement for full testing. In 2025, the results came back.

The testing showed a strong evidentiary link between his DNA and the biological evidence collected from the scene of Diane Matthews’ murder 37 years earlier. This part of a cold case rarely makes it into the retelling. It’s months of quiet, careful work, not one dramatic breakthrough. Detectives went back through the old case file.

They worked with prosecutors to understand what the new evidence could support. They looked again at anyone else who’d ever been considered a person of interest, and ruled them out one by one until the physical evidence pointed in exactly one direction. Only after all of that did they seek an arrest warrant? On July 9th, 2026, the United States Marshals Service took a 68-year-old man into custody in North Carolina.

His name was Willie J. Carpenter. He was charged with first-degree murder in the death of Diane Matthews. That earlier charge, the one that had first put his DNA in the system, turned out to be a conviction. In 2013, in Durham County, North Carolina, he pleaded guilty to indecent liberties with a minor, kidnapping, and statutory rape involving a 14-year-old girl.

At the time of his arrest for Diane’s murder, Carpenter was living in Jamestown, North Carolina, a small town outside High Point. He attended a local congregation there, New Life Family Church, where members knew him as a singer and a musician, someone who’d been part of that community for years. When his arrest became public, people at the church said they were shocked.

The pastor described him as talented and well-liked, someone the congregation had trusted. People who’d sat next to him for years suddenly had to reconcile the man they knew with the charge he was now facing. That gap between who someone appears to be and what they’re accused of doing has no clean answer. Carpenter is awaiting extradition from North Carolina to Orange County, Florida, where he’ll face the first-degree murder charge in connection with Diane’s death.

Under Florida law, first-degree murder is a capital offense. That means it carries the possibility of life in prison, and in certain circumstances, a more severe sentence, depending on how prosecutors choose to proceed. None of that has been decided yet. Carpenter hasn’t been convicted of anything, and he’s presumed innocent unless and until a court finds otherwise.

What’s certain is this. For 38 years, Diane Matthews murder had no name attached to it. Her children grew up without her and without an answer. Irene Simon, the co-worker who never stopped thinking about Diane, said that when she finally heard about the arrest, she felt something she’d been waiting decades to feel.

Relief. She said it plainly. She said Diane died in bad hands and that it took far too long for anyone to be held accountable for it. The case against Willie J. Carpenter is still ahead of him and still ahead of everyone who’s waited this long for it. But for the first time in 38 years, it’s actually moving.