Keith Morrison

Koberger's only known friend at WSU turned out to be someone with whom he shared an office and the graduate student apartment complex. a woman from Korea, Nayoung Ko.

Koberger's only known friend at WSU turned out to be someone with whom he shared an office and the graduate student apartment complex. a woman from Korea, Nayoung Ko.

Two young people far from home. Who could blame them? Two sources familiar with the relationship characterized it in a similar way.

Two young people far from home. Who could blame them? Two sources familiar with the relationship characterized it in a similar way.

That's about the same time Koberger was browsing these photos of women on his phone. Dateline has obtained dozens of these photos. Many of them got to Koberger's phone from Instagram. We've blurred the photos of the women for obvious reasons.

That's about the same time Koberger was browsing these photos of women on his phone. Dateline has obtained dozens of these photos. Many of them got to Koberger's phone from Instagram. We've blurred the photos of the women for obvious reasons.

But there are blondes and brunettes, and many in bathing suits, some from WSU, others from the University of Idaho, including close friends and Instagram followers of Maddy Mogan, Kaylee Goncalves, and Zanna Kernodle, three of the roommates on King Road.

But there are blondes and brunettes, and many in bathing suits, some from WSU, others from the University of Idaho, including close friends and Instagram followers of Maddy Mogan, Kaylee Goncalves, and Zanna Kernodle, three of the roommates on King Road.

Dr. Gary Brucato is a clinical and forensic psychologist, a researcher and author. He's the co-creator of the Columbia University Mass Murder Database and a visiting scholar at Boston College. Dr. Brucato has not examined Brian Koberger, but he has followed the case closely. And we asked him about these photos found in Koberger's browsing history.

Dr. Gary Brucato is a clinical and forensic psychologist, a researcher and author. He's the co-creator of the Columbia University Mass Murder Database and a visiting scholar at Boston College. Dr. Brucato has not examined Brian Koberger, but he has followed the case closely. And we asked him about these photos found in Koberger's browsing history.

Whatever that fantasy was for Brian Kober, or if he had any at all, we don't know. But history shows that potential serial killers progress, engage in escalating forbidden behaviors, peeping into windows, to entering homes uninvited, collecting personal things. And that's why this story about Koberger's classmate Nayoung Ko stands out.

Whatever that fantasy was for Brian Kober, or if he had any at all, we don't know. But history shows that potential serial killers progress, engage in escalating forbidden behaviors, peeping into windows, to entering homes uninvited, collecting personal things. And that's why this story about Koberger's classmate Nayoung Ko stands out.

It happened two months before the murders, September 10th, 2022, in her apartment.

It happened two months before the murders, September 10th, 2022, in her apartment.

Then Coe discovered two items were missing. Prized possessions, a watch, and a personal letter. And here she was alone, and really, she's scared. It was also two o'clock in the morning. Who could she call at that hour? Well, the night owl, Brian Koberger, of course.

Then Coe discovered two items were missing. Prized possessions, a watch, and a personal letter. And here she was alone, and really, she's scared. It was also two o'clock in the morning. Who could she call at that hour? Well, the night owl, Brian Koberger, of course.

And then, a source told Bloom something else occurred to Na Young Ko. The day before this theft, she hadn't been able to find the key to her apartment, a key usually kept in a drawer at her office, the office she shared with Brian Koberker.

And then, a source told Bloom something else occurred to Na Young Ko. The day before this theft, she hadn't been able to find the key to her apartment, a key usually kept in a drawer at her office, the office she shared with Brian Koberker.

Coe was worried. She bought a security system for her apartment, one she could check on her phone. And when the installation proved to be a little too complicated for her, again, she called Kohlberger.

Coe was worried. She bought a security system for her apartment, one she could check on her phone. And when the installation proved to be a little too complicated for her, again, she called Kohlberger.