Sam Parker

The crime lab tests confirmed Teresa's blood and Parker's DNA were in the back of her SUV.

Investigators now had what they needed to make an arrest.

Nearly one year after 911 dispatcher Teresa Parker disappeared, her police officer husband, Sam Parker, was charged with his wife's murder.

Did you kill Teresa Parker?

No, I did not.

What do you think happened to her?

I do not know.

Defense attorney David Dunn has a whole other theory to explain Teresa Parker's disappearance.

Did Teresa have a boyfriend?

The week before 41-year-old Teresa Parker disappeared, she took a trip to the Smoky Mountains.

She called me her first morning there and was like, I'm having coffee outside.

It's just beautiful.

Three days in Gatlinburg, Tennessee.

It was supposed to be a quick getaway before her move and the divorce.

Teresa made a reservation at her favorite cabin, the Honey Bee Hideaway.

You know, she told me, she said, I want to be by myself and think about things, clear my mind.

She'd been so stressed.

And she was alone.

And she was alone, yes.

51-year-old Sam Parker knew his wife was going to Gatlinburg.