Synopsis: The series takes a look at the lesser-known serial killers of the country, some of whom were perhaps even more prolific than their more infamous counterparts.
Each of the six episodes puts a name to the likes of The Sunday Morning Slasher and The Chameleon Killer, plus more. And while many uncaptured killers, including Jack the Ripper and the Zodiac Killer, are well-known to even the most seasoned Oxygen viewers, here are a few not-as-famous American cases in which the killer (or killers) has never been identified. (Courtesy Oxygen, 2025)
Show Guide: 'Unknown Serial Killers Of America'
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- By Rick Ellis
