The Crime Stories with Nancy Grace

Over the years at the District Attorney's Office, I worked really hard to develop an expertise in arson prosecutions.

They're very, very difficult to prove. Let me tell you why.

First, when you see a fire, you got to figure out, was it a crime? Then you get to the who done it hard.

Man, this case cracks wide open in a way that nobody ever believed that it would.

Crime Stories with Nancy Grace

That one, one, where is your emergency?

Did you need to go drive? Do the fire? The house or what? The house?

The caller was a 16-year-old girl who told the 911 operator that she, her parents and her younger brother had all escaped, but barely.

I don't understand. The entire front of our house has been used for just being gulped.

Okay. I'm glad everybody got out.

That dad was Scott Perk. You'll be hearing a lot about him. Perk said his family had been sound asleep when he heard a loud boom.

We heard an explosion. That will work us up.

We're cool at the moment.

Perk said he'd scramble to get everyone up and out. By the time the first fire units rolled up, the Perk home was a roaring bomb fire.

What I'm hearing sounds like right at the get-go when you hear about an explosion that could have been naturally internal fire, not necessarily in arson.

When something explodes, you think of possibly of an explode, sometimes a machinery explode and set the house on fire.

But where the fire has burned the most intensely and on the most destruction that's typically where the fire started.

Let me introduce an all-star panel to break it down and put it back together again with me.

Judge and trial lawyer court TV anchor Ashley Wilcott at Ashley Wilcott.com.

We're now psychiatrists joining me out of the Atlanta jurisdiction.

We're now psychiatr Angela Arnold at Angela Arnold MD.com.

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