In Hawaii, anesthesiologist Gerhardt Konig is on trial for allegedly attempting to murder his wife while on a scenic hike -- and she's taking the stand against him. In Mississippi, a man is being tried a second time for the murder of his daughter's boyfriend, Kirby Carpenter. Prosecutors say the proof is the victim's silver coins found in the defendant's car. In Dateline Round Up, verdicts in Utah and New York, plus an arrest in the 2011 murder of an Iowa realtor. And tips from a real estate agent on how his colleagues can keep themselves safe on the job.

Find out more about the cases covered each week here: www.datelinetruecrimeweekly.com

Start listening to "Trace of Suspicion" here: https://www.nbcnews.com/traceofsuspicion

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The jury weighs in at the trial of Kouri Richins, the Utah grief author and momofthree accused of murdering her husband. In Provo, Utah, prosecutors say greed is at the heart of their case against Meggan Sundwall, a nurse accused of injecting her friend with a fatal dose of insulin. In Dateline Round Up, the ex-lover of convicted killer and former MLB pitcher Dan Serafini learns her fate. And a potentially game-changing ruling in a 30-year-old murder case. Plus, AI is being used to write police reports and predict crimes. Does it work?

This episode discusses suicide. If you or someone you know is in crisis, call the Suicide & Crisis Lifeline at 988 or visit 988lifeline.org for more resources.

Find out more about the cases covered each week here: www.datelinetruecrimeweekly.com

Start listening to "Trace of Suspicion" here: https://www.nbcnews.com/traceofsuspicion

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Mom-of-three Kouri Richins stands trial in Utah for the alleged murder of her husband. Prosecutors call her ex-lover to testify and he weeps on the stand. In Florida, the man who confessed to gunning down Microsoft employee Jared Bridegan takes back his confession and guilty plea, potentially upending the case. In Dateline Round Up, a verdict in Dale Warner's trial for murdering his wife, plus new filings in the case of alleged Gilgo Beach serial killer Rex Heuermann. And Josh Mankiewicz gives a sneak peak of his new podcast, "Trace of Suspicion."

Find out more about the cases covered each week here: www.datelinetruecrimeweekly.com

Listen to "Trace of Suspicion" here: https://www.nbcnews.com/traceofsuspicion

Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.