David Muir

And then three years ago, Othram, a forensics lab in Texas, now enters the picture. a promising something everyone close to the Kathy Swartz case has waited decades for, answers.

They knew that it was an unknown male contributor to that DNA, but they didn't know who it was.

They knew that it was an unknown male contributor to that DNA, but they didn't know who it was.

All these years later, they said, well, look at this and see if there's something you can do with it. And you were convinced you could?

All these years later, they said, well, look at this and see if there's something you can do with it. And you were convinced you could?

We were absolutely certain that we could help the Michigan State Police work this case.

We were absolutely certain that we could help the Michigan State Police work this case.

In 2022, a package containing DNA, that single bloody fingerprint from Kathy Swartz's pink phone, arrives right here at this building just north of Houston. You know, to the outsider, it looks like just another office building, but what's actually happening inside, in these labs, is now changing how investigations across this country are being solved.

In 2022, a package containing DNA, that single bloody fingerprint from Kathy Swartz's pink phone, arrives right here at this building just north of Houston. You know, to the outsider, it looks like just another office building, but what's actually happening inside, in these labs, is now changing how investigations across this country are being solved.

This is the headquarters of OTHRIM, a cutting edge forensics lab that's been mentioned in some of today's most talked about criminal investigations. And Othram has been credited by law enforcement with helping to solve cases that have been unsolvable for years now. How are you?

This is the headquarters of OTHRIM, a cutting edge forensics lab that's been mentioned in some of today's most talked about criminal investigations. And Othram has been credited by law enforcement with helping to solve cases that have been unsolvable for years now. How are you?

How are you? Thank you.

How are you? Thank you.

David and Kristin Middleman are the husband and wife team behind all of this.

David and Kristin Middleman are the husband and wife team behind all of this.

So you'll hold on to remains for a while and keep trying?

So you'll hold on to remains for a while and keep trying?

The Middleman's partnership, both in work and in life, actually began over a few blind mice. It's the year 2000. You've just started your PhD at Baylor. You're doing a study on mice.

The Middleman's partnership, both in work and in life, actually began over a few blind mice. It's the year 2000. You've just started your PhD at Baylor. You're doing a study on mice.

And there was another young scientist.