I'm Lester Holt and this is Dateline.

All you see are state trooper cars, sheriff cars.

Where's my sister?

I says, where's your wife?

And he pointed to the kitchen area.

Victim had blood pooling around her head.

All they told us was there was an intruder.

Her first thought was to protect her children.

And she put up a very good fight.

She observed mommy fighting with what she termed as the robber.

This is a real who done it.

Pretty much so.

I remember Kelly not wanting to be home alone.

I've never encountered a case this complicated or complex.

Something is not right here.

It's the type of case that movies are made out of.

Everything you thought you knew was all a lie.

Here's Andrea Canning with the house in the woods.

He wasn't exactly sure where the house was or what had happened there.

But he knew it was bad.

Yeah, these ones are not fun to do.

Finally, he found it down a secluded driveway.

...