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ALL NEW TONIGHT at 9/8c: Deadly Omission

A woman's murder shines a light on an unsolved mystery from years earlier. As the connection between the two cases becomes clear, a long-hidden truth surfaces. Andrea Canning reports tonight, October 25, at 9/8c on NBC.

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The Man in the Black Mask: Episodes 3 and 4

Police recover a deleted document from Mark Twitchell's computer that reads like a script to a horror film. But was it more than just fiction? Episodes 3 and 4 of Keith Morrison's "The Man in the Black Mask" are waiting for you, for free, wherever you get your podcasts. Subscribe to Dateline Premium to binge to the entire series now, ad-free.

NEW EPISODE! Dateline: True Crime Weekly

Emotions are running high in a Delphi, Indiana courtroom as the prosecution starts building its case against a man accused of murdering two middle schoolers. Across the country in San Francisco, a star witness takes the stand: the sister of the man charged with the murder of tech mogul, Bob Lee. And, highlights from the testimony of the Florida woman on trial for allegedly leaving her boyfriend to die in a suitcase. Plus, some Halloween safety tips for kids and their parents.

Talking Dateline: The Night of the Nor'easter

Blayne Alexander and Andrea Canning discuss Andrea's episode, "The Night of the Nor'easter." In 2022, Karen Read was charged with killing her Boston police officer boyfriend, John O'Keefe, by drunkenly backing her car into him in blizzard conditions. She says that never happened, and her defense – that she was being framed as part of a police cover up – gained national attention and sparked demonstrations and protests at the courthouse. Andrea shares a podcast-exclusive clip from her conversation with one of John O'Keefe's family members. And Dateline producer Sue Simpson stops by to answer viewer and listener questions from social media. The episode is out now, wherever you get your podcasts.

Sioux Falls, South Dakota, man missing after morning walk nearly 2 months later

Tyler Weathersby was last seen on a walk in Sioux Falls, South Dakota, on September 4, 2024. He did not have any of his belongings with him and has not been seen since. The Sioux Falls Police Department is investigating.

1991 disappearance of Judith Geurin in Sodus Point, New York, reclassified as a homicide

45-year-old Judith Geurin was last seen on February 20, 1991, in Sodus Point, New York. On October 8, 2020, her remains were found in nearby Huron, New York. Her disappearance was publicly reclassified as a homicide in May 2024. The Wayne County Sheriff's Office is investigating.