Dateline NBC

Keith Morrison sits down with Dennis Murphy and Dateline producer Michelle Madigan to discuss their episode, “Simply Diabolical.” In May 2016, 29-year-old Michelle Hadley allegedly sent several threatening emails to her ex-boyfriend, Ian Diaz, and his new wife, Angela. But it wasn’t until Angela called 911 to report that she had been sexually assaulted and that Michelle was responsible for setting it up, that Michelle Hadley was arrested and sent to jail. The only problem was Michelle wasn’t behind the emails, or the alleged plot to have Angela sexually assaulted. She’d been set up by Ian and Angela. Dennis and producer Michelle Madigan tell Keith about the investigative work done by Hadley’s father to try to clear his daughter's name. Dennis shares an extra clip from an interview with one of Angela’s friends, as well as a clip from his interview with Michelle Hadley herself. Plus, our team answers your questions from social media.

Have a question for Talking Dateline? Send us a DM @DatelineNBC or leave a voicemail at (212) 413-5252. Your question could be featured in an upcoming episode.

Listen to the full episode of “Simply Diabolical”: https://swap.fm/l/dl_simplydiabolical

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A bizarre cyber-revenge case lands a young woman in jail; an unexpected twist reveals the real culprit. Dennis Murphy reports.

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Hey Dateline fans, here's a special preview of the next episode of Dateline: Missing in America Season 5. In “No Ordinary Sunday,” Josh Mankiewicz reports on the disappearance of 28-year-old Marilyn “Niqui” McCown, who vanished in Richmond, Indiana, on July 22, 2001, just weeks before her wedding. Listen to the full episode in the 'Dateline: Missing in America' feed - something you hear might jog a memory that could help authorities find Niqui.

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In Massachusetts, Lindsay Clancy is on trial for allegedly murdering her three children. Her family and former colleagues testify for the defense. In New York, Luigi Mangione pleads guilty to federal stalking charges in the killing of UnitedHealthcare CEO Brian Thompson, while his lawyers seek to have the state murder case dismissed. In Dateline Round Up, Alex Murdaugh appears for a preliminary hearing ahead of his retrial for the murders of his wife and son. Plus, the trial begins for one of three people accused in the ambush murder of 33-year-old father Jared Bridegan. And an expert explains ghost guns and how they can complicate investigations.

 

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.

 

Listen to season 5 of the Dateline: Missing in America podcast: https://swap.fm/l/miafdlw   

 

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

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In a special edition of Talking Dateline, NBC News’ Ellison Barber, host of the Netflix podcast, “Allegedly,” gives Josh Mankiewicz the third degree onstage at Caesars Palace in Las Vegas, for CrimeCon 2026. Josh tells Ellison how he got his start covering true crime and what these cases can teach us about ourselves and others. He also talks about the genesis of his award-winning podcast series, “Dateline: Missing in America,” before taking questions from the audience.

Have a question for Talking Dateline? Send us a DM @DatelineNBC or leave a voicemail at (212) 413-5252. Your question could be featured in an upcoming episode.

Listen to the “Missing in America” podcast: https://swap.fm/l/miafdlw

Listen to Josh’s first true crime hour, “The Night Brianna Vanished”: https://swap.fm/l/dl_thenightbriannavanished

Listen to the subscriber-exclusive “After the Verdict” episode on the case in which Josh catches up with Brianna’s mother: https://dateline.supportingcast.fm/listen/dateline-nbc-premium/after-the-verdict-the-night-brianna-vanished

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