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.

Seven-time gold-medal sprinter Allyson Felix, four-time Olympic tennis champion Serena Williams and Mike Krzyzewski, who coached the U.S. to two basketball gold ...