On the last night of his life, Chad Enshill walked out of here, past those cameras,

and into the dark, cold winter.

You're seeing someone who's leaving the bowling alley on his way to his own death.

There's a report of a house fire.

Housefire just on the outskirts of the Bismarck and a person died inside.

So this is it, huh?

This is where they lived.

I can immediately see a naked human body laying on the floor.

They have a liquor bottle on the bed and they have a shotgun lying on the bed.

What's going on here?

Nikki was hysterical on the phone.

Couldn't hardly get words out.

She was convinced that he committed suicide.

She said suicide.

Nine a million years.

Where the shotgun was placed from where the body was, that was odd.

How vital is the work that these dogs do?

They alerted to me that there was possibly the presence of an ignitable liquid.

We have a case of arson going on.

Chad didn't die by suicide.

He wasn't back to murder.

He now determined it's time to turn up the heat.

...