(NBC NEWS) – Tonight on “Dateline,” when Susan Woods doesn’t show up for work, she is soon discovered dead in her bathtub. As police search for answers, they find a trail of victims.

Here’s a preview of Natalie Morales’ report, in her first broadcast as an official “Dateline NBC” correspondent:

A gentle life – ended by an act of violence.

SARA VANDEN BERGE: I’ll never get the image out of my head. It was brutal. It was just absolutely brutal.

There were obvious clues, but no easy answers.

RICHARD PRINGLE: We had the evidence. That’s what’s so frustrating about it. specially when it hasn’t been solved.

A crime that left one woman dead and a trail of other victims in its wake.

SHANNON: I felt hurt, I felt betrayed. The justice system is so broken.

Sometimes justice delayed is no justice at all. And even three decades later, the pain is still raw.

MICHAEL WOODS: I have a good 20, 30 years of rage.

On Friday’s “Dateline,” Natalie Morales interviews the killer, watch tonight on NBC4 at 9 p.m.

About ‘Dateline

“Dateline NBC” is the longest-running series in NBC primetime history and is in its 30th season. Dateline is anchored by Lester Holt and features correspondents Andrea Canning, Josh Mankiewicz, Natalie Morales, Keith Morrison and Dennis Murphy.

Dateline is the #1 Friday newsmagazine and reaches more than 17 million people every week through its broadcast, and millions more through its social media platforms and podcasts.

The stories range from compelling mysteries to powerful documentaries and in-depth investigations. When major news breaks, they go to the scene, putting the pieces together to bring the viewer the full picture. And in every story they tell, they help the real people who lived the events share their journeys with the viewer.

This past season, Dateline debuted two new podcasts, “Mommy Doomsday” and “Killer Role,” hosted by correspondent Keith Morrison.

In February, NBC also greenlit a straight-to-series inspired by the story featured in the Dateline podcast series, “The Thing About Pam.” Two-time Oscar-winning actress Renee Zellweger will star and executive produce the series, in collaboration with Blumhouse Television, NBC News Studios and Zellweger’s Big Picture Co.