
As a bonus for Sunday Sitdown fans, we’re sharing the trailer for Trace of Suspicion, an all-new original podcast series from Dateline and Josh Mankiewicz. After seemingly healthy 23-year-old Marine Todd Sommer dies unexpectedly, his widow Cindy’s lavish spending, cosmetic surgery, and wild partying raise investigators’ suspicions. They accuse her of poisoning him with arsenic for his life insurance, setting off a criminal case that takes a stunning turn... Josh Mankiewicz sits down with the woman at the center of it all in Dateline’s newest podcast. If you like what you hear, just search Trace of Suspicion to listen to the first two episodes now, completely free. Or subscribe to Dateline Premium on Apple Podcasts, Spotify or DatelinePremium.com. Subscribers get early access to new episodes and can listen to all Dateline podcasts ad-free.
Loading summary
Josh Mankiewicz
He was a young Marine, handsome in his dress blues.
Investigator
He had a religious aspect to him.
Josh Mankiewicz
She was a free spirit who didn't care about convention.
Widow
I'm a hippie. I'm a deadhead.
Josh Mankiewicz
They married and made a life together. And then one night, The Marine died.
Widow
911, do you have a rescue?
Redfin Advertiser
Yeah, my husband just crashed.
Widow
What happened?
Redfin Advertiser
He just crashed. He woke up and couldn't believe he crashed.
Josh Mankiewicz
Drums rolled, guns saluted, and a flag was folded for the widow. All of it by the book. Solemn, dignified, appropriate. And then something happened. The widow went off script.
Neighbor
She started having a lot of parties shortly after his funeral. A lot of the neighbors was just like. She got over that pretty quickly.
Josh Mankiewicz
With her husband's insurance money, the widow lived it up. New bling, new lovers, new look.
Prosecutor
This case started because of the breast implants. Think about it. If she had a nose job, would we even be talking about it?
Josh Mankiewicz
Eyebrows arched, tongues wagged. And an investigation was born. Chemists found arsenic in the Marine's tissues, and his widow was accused of murder.
Widow
You know, we need to try to pursue justice for this young Marine and his family.
Josh Mankiewicz
Our latest podcast takes us to San Diego, where an untimely death and some unseemly behavior added up to a murder rap.
Widow
What am I being arrested for?
Josh Mankiewicz
Like I told you yesterday, there was some foreign substance that was found in his body, and.
Widow
So are you charged with murder? Oh, my gosh. Are you serious?
Josh Mankiewicz
Yes. It's a story about investigators in dogged pursuit of a theory.
Investigator
I told them they might want to get the stuff retested and find out what's going on.
Josh Mankiewicz
It's about prosecutors hell bent on winning and about what happens when the wheels of justice go off the rails.
Widow
It was over a million. My mom sold her house, cashed in all of their retirements, all their every everything.
Investigator
It shouldn't be a game. It shouldn't be a situation where let's see what we can get away with. And that's what happened in this case.
Josh Mankiewicz
I'm Josh Mankiewicz, and this is Trace of Suspicion, an all new podcast from Dateline. Listen to the latest episodes completely free or subscribe to Dateline Premium on Apple Podcasts, Spotify or Dateline premium.com subscribers get early access to new episodes and can listen to all Dateline podcasts ad free.
Redfin Advertiser
There's a difference between liking a house and actually getting it. Redfin is built to close that gap. Redfin agents close twice as many deals as other agents. So when you find a home you love, you're not a step behind when it's time to make an offer. That means less watching great homes disappear and more zeroing in on the one you'll actually end up calling home. Redfin helps turn saved listings into real addresses. Get started@redfin.com own the dream.
Episode: Dateline Presents: Trace of Suspicion
Release Date: March 10, 2026
This episode of "Sunday Sitdown with Willie Geist" features a special Dateline presentation, "Trace of Suspicion," hosted by Josh Mankiewicz. The story unravels a real-life mystery in San Diego: the suspicious death of a young Marine, his unconventional widow, and the string of events that led to a murder investigation riddled with controversy and public intrigue. The episode explores themes of grief, suspicion, and the machinations of the justice system when public perception and prosecutorial zeal collide.
Widow, describing her identity:
"I'm a hippie. I'm a deadhead." ([00:11])
Prosecutor, on the origin of suspicion:
"This case started because of the breast implants. Think about it. If she had a nose job, would we even be talking about it?" ([01:00])
Josh Mankiewicz, encapsulating the mood:
"Eyebrows arched, tongues wagged. And an investigation was born." ([01:09])
Widow, upon arrest:
"What am I being arrested for?" ([01:37])
"So are you charged with murder? Oh, my gosh. Are you serious?" ([01:43])
Investigator, on justice gone awry:
"It shouldn't be a game. It shouldn't be a situation where let's see what we can get away with. And that's what happened in this case." ([02:13])
The episode intertwines Josh Mankiewicz’s classic Dateline narrative style—measured, dramatic, and often edged with irony—with direct quotes from investigators, the widow, and others. The mood oscillates between the somber (military funeral, family tragedy), the sensational (insurance money, new lovers), and critical (justice system scrutiny), maintaining a conversational but investigative tone throughout.
"Trace of Suspicion" unpacks more than a murder case; it’s a complicated story about the collision of community perception, forensic science, legal maneuvering, and the unpredictable nature of human behavior in the wake of tragedy. Through rich narration, candid quotes, and a focus on both the emotional and systemic fallout, the episode invites listeners to question where truth ends and suspicion begins.