Brent Christensen

We still didn't know what happened to Yingying.

We thought that by releasing him, we would have the opportunity to find Yingying.

The suspect in this case was not at all some nefarious person from the outside looking in.

He's the kind of guy you'd want to bring home to mom and dad.

I think it took a lot of people by surprise because he was a PhD candidate.

It didn't, I guess, fit what would be considered a normal profile.

So there was really nothing of significance in his background.

And I knew that he was from Wisconsin.

Brent Christensen was born in 1989 in Stevens Point, Wisconsin.

So this is the town of Stevens Point, which is a population of about 26,000 people here in Wisconsin.

You can't get a town any different than Non Ping, where we met the family of Ying Ying.

This is the neighborhood where Brent grew up.

It's certainly middle class.

That's where Brent grew up.

Typical brothers, you know, Matt was always picking on Brent.

Brent wouldn't fight back, and I had to warn my older boy, watch out, he's getting bigger.

What's the history of Brent?

Typical kid, really.

Highly intelligent.

I was able to teach him early on, you know, before kindergarten, how to read, write, math.