Bill Spencer

If you're being interviewed for hours, though, one might think it's relevant to say, I was having an affair.

That's a possible... Looking backwards, I should have said that.

But even after teenager Billy Flynn and two of his friends were arrested, she still didn't say anything about the affair.

The teenagers kept silent for months.

But then the prosecution moved to try them as adults, and the stakes got higher, according to lead prosecutor Paul Maggiato.

That's when they admitted they killed Greg Smart.

But there was more to it.

Billy said Pamela was involved.

In fact, the teens said she was the mastermind.

What was his version of events to you?

Police heard a story of seduction and manipulation, that Billy had become spellbound by the sensuous and more experienced Pamela Smart.

He would do anything for her, even kill her.

Maggiato says Billy tried and failed a few times to kill Greg, and then asked his friends for help.

And for the life of me, I'm not sure why, they agree to help him.

They said Pamela told them when Greg would be home, and she made arrangements to be gone.

They ransacked the house.

Billy shot Greg, and they all fled.

Exactly three months after the killing, police had what they needed.

They drove to Pamela's workplace.

The news morphed in a nanosecond from the story of a tragic widow to the story of a black widow.