In the end, Alex and Herring, as well as Herring's sister, Marion Kinley, and her brother-in-law, John Wayne Kinley, Jr., ...

Learn more about the most wanted murderers in the U.S. ahead of the Unknown Serial Killers of America premiere.

The series premiere of Unknown Serial Killers of America airs on Sunday, May 18, 2025, at 7/6c on Oxygen, following an all-new episode of Oxygen’s Snapped.

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Learn what happened in the Sarah Maguire murder case, including how Brinlee Denison and Nicholas Johnson were caught.

Friends Vivian Caraballo and Joann Feliciano are found murdered within weeks of each other, but were they targeted by the same person?

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Each hour-long episode of “Unknown Serial Killers of America” profiles the horrific stories of these unconscionable criminals ...

She was one of the people closest to Matthew Jacobs, but she also tried to profit off him after his tragic death. Oxygen’s ...

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Maricopa County jurors arrived at the verdict Tuesday, April 22, 2025, finding the defendant guilty of orchestrating the July ...