Blaine Alexander

Back at the house, that was one of the first things investigators noticed.

And you noticed that immediately?

Absolutely.

You're thinking optimistically, like, OK, we should have video.

This should help us kind of bring this to a close pretty quickly.

Yes.

So you all start to search the house looking for the footage.

What do you find?

The DVR that connected to the security system.

So, no video at all.

A setback, certainly, but also a clue because that video recording equipment was hidden away in a small closet above the garage.

What does that tell you?

and knew their dogs.

Rebecca said they'd been closed inside the bedroom all day, the same bedroom where the burglary happened.

And when Detective Diebel looked around the bedroom, he thought something else was off.

The police told Rebecca their theory, that the killer wasn't a stranger, but someone who knew the family and the house quite well.

You think you can find your dentist?

I don't think we can, yeah.

Investigators were looking for someone close to the family and someone who had spent a lot of time at the house.

It sounds like his fingerprints are literally all over the crime scene.