Lester Holt

You can find it in the Dateline podcast feed or stream it on Peacock.

So go there and listen to that.

When you come back, Keith has some extra sound for us from private investigator Lynn Marie Garcia, who describes a surprising request she says that Sarah made after her conviction.

And later, Keith will answer your questions from social media.

So, OK, let's start talking Dateline.

Keith, just give us the overview, your view of this story.

It's still relatively rare that we see women as perpetrators in cases like this.

You've covered a few, though.

Lori Vallow, Pam Hupp, Sarah Hartsfield.

Is this your specialty?

Is this something you're able to look and... It seems like it's becoming one.

It seems a little blunt.

Yeah, it's because this idea that Sarah has this, somehow this pull over men.

Can you describe what it was about her that made her so appealing?

When investigators look at Sarah's early relationships, they see the same cycle repeating, essentially.

Intense, very intense emotional beginnings, followed by deception, and then chaos once the relationship starts to fall apart.

Is that where the story really starts to shape for you, this pattern?

She was never charged in any of those cases, though, correct?

No, she wasn't.

When I was watching this, I was reminded of a recent interview I did for Dateline True Crime Weekly, where I interviewed an arson investigator, and he talked about how difficult these cases are to prove.