Detective Scott Roberts
speaker
295 appearances
18 recordings
1 series
first heard Dec 2024
last heard Jun 2025
Detective Scott Roberts’s voice in public audio — every appearance, attributed to the second.
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Appearances
She had been abducted from a parking lot in Madison and sexually assaulted and killed. And he was convicted of that in the late 70s and sentenced to life here in prison in Wisconsin. And after that time, the late 90s, early 2000s, he was convicted of a double homicide of some hitchhikers in the Los Angeles area. And then, again, in the early 2000s, he was convicted of homicide in Tucson, Arizona.
He had killed an FBI agent's daughter, adult daughter, sexual assault, and dumped her in the desert.
So he definitely was in the area, and the records from the jail back then that they had were on microfilm, and they were difficult to read. Investigators believed it was possible that he was in jail at the time of this case, but they're not certain because of the quality of the records. And when they talked with or attempted to talk with Zamestilla, he said, well, no, I wasn't in custody.
I was out. So they were never able to definitively say whether or not he was in custody.
And so part of his demands were he wanted to serve his sentence in a certain prison and he wanted some guarantees. They were suspicious back then as to whether or not he was claiming this murder to gain something for himself because he's incarcerated for life or if he actually committed it. And they basically said, well, we need to know some details and he was not willing to provide them.
So he was never ruled in or out.
They did identify some sperm cells on the swabs, but at the time, there wasn't enough genetic material present to develop a full profile for the male, and certainly not a profile that would be suitable for entry into a database like CODIS.
They were able to detect a trace level of male DNA from a couple of the hairs, but again, the quantity was not sufficient to develop a profile. They attempted to analyze the rectal swabs as well, and there's a lack of male DNA detected, so no further analysis was performed.
So one of the reasons that this case came back around is we had someone call in and say that they had noticed that someone was placing flowers on the victim's grave. And so that kind of spurred our interest and my supervisor's interest in being like, hey, let's have somebody take a look at this again.
I talked with the analyst, and he and I agreed that, you know, certainly 2001, but even 2009 to 2023 is a lifetime in DNA science, and that their protocols are much different. And I resubmitted some of the swabs that we still had, and then I also resubmitted DNA packets.
So the hope is that we'll be able to get a full male profile, right? Based on the advances in genetic genealogy, a lot of times, if you have a DNA profile, you're going to identify it. It's just a matter of time. And so if we get that full male profile, we're confident that we'll have the resources to identify that person.
There is a possibility that someone's out there who knows what happened to Lisa and they're still alive. And for whatever reason, they've never come forward. That's certainly possible. And that solves a lot of cold cases too. So between the physical evidence and somebody potentially coming forward with information, I think that's really what we would need to push this case forward.
No tip is going to be disregarded. You know, we're happy to talk to anyone who might have information because you truly don't know and we truly don't know what, you know, what information is key. There might be something out there that we have no knowledge of that someone brings to us and it solves the case.
The knife was taken from a butcher block, which was on top of the refrigerator. And I don't remember if we found the knife, Bill.
It was one of the larger knives. And if I remember right, the wound was down between her collarbone. It went down, hit the aorta, and she bled out right there.
And she was a petite woman. She was a small-framed woman. And so she just folded. It was a very cold-blooded thing.
He just said that they danced. He saw the cards exchanged.
We don't know her eating patterns, so it could have been just for her and she kept some in the refrigerator for lunch the next day, or she could have ordered for two.
And he came in and he said, oh yeah, that's him.
What had happened was, and I remember this all the time, so we were interviewing him, and he had his legs crossed and his arms were crossed, meaning he's not talking to us. And I asked him nicely, put your legs down, sit up straight and act right. And I said to him, you started to hurt these women because your mother wasn't here to protect you. And he started shaking his head. Remember that?
Showing 61–80 of 295 · page 4 of 15
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