Tonight on Dateline.

I hear on the news that Desire Sunford had been found murdered, and I screamed.

We were searching through the house, and I could see Desiree on the floor.

She was shot very violently.

Scott was very talkative.

I actually stayed with a friend. What's the friend's name? Oh, her name's Paige.

You're wondering, who is Paige? That's right. Is he having an affair?

Desiread Page and Scott all knew each other well. Yes. I was accepted as a part of their marriage.

Paige called this tip in.

She says, I know who the killer is.

That's right, a name that had never come up before.

She's trying to set me up saying that killed someone.

It makes me sick.

The psycho swiggled her way into their life and created chaos.

Talk about twists.

I was completely blown away.

I risked my life to do the right thing.

And I'm being crucified.

A husband, a wife, a mistress, did a three-way affair lead to murder?

I'm Lester Holt, and this is Dateline.

Here's Blaine Alexander with deadly entanglement.

We've all had that fear.

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