(NBC News) — Friday on “Dateline,” insiders speak out in exclusive interviews about Nancy Brophy, a romance novelist charged with the murder of her husband, Chef Dan Brophy, years after she wrote a blog post titled “How To Murder Your Husband.”

Here is a preview of Josh Mankiewicz’s report:

Less than 48 hours after Chef Dan Brophy was shot in the back, friends and family gathered at the Oregon Culinary Institute.

VANESSA PAZ: Hundreds of people came out for his vigil. And it was sad. Nancy sat there and gave her favorite memories of dan.

NANCY: He was a person who did what he loved. He loved teaching. He loved mushrooms. Dan was one of the few people I’ve ever known who knew exactly what he wanted in life and loved doing it.

JOSH MANKIEWICZ: You have any idea he’d touched that many people?

NATHANIEL STILLWATER: Ido. Yeah. It never ceased to amaze me how many — people he’d — he intersected with throughout the course of his career.

Detectives Anthony Merrill and Darren Posey were aware that Dan’s friends and family were asking some obvious questions.

TANIA MEDLIN: Who knows if somebody was in the building. Who knows if, you know, somebody followed him in. You wouldn’t look at him in the street and say, “Yeah, that’s somebody we should tap for money.”

ANTHONY MERRILL: We found that he had his wallet on him with all of his credit cards he had seventy-some dollars in cash, a cell phone, a watch, keys to his truck that was parked outside.

Detectives wondered: Could the killer, or killers have been after something else?

Watch Friday’s “Dateline: Murder in Kitchen One” on NBC4 at 10 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.