Each hour-long episode of Unknown Serial Killers of America profiles the horrific stories of these unconscionable criminals, and delves into what transformed them into evil monsters. With first-hand ...

Unknown Serial Killer of America unpacks the investigation leading to prolific Indiana killer Herb Baumeister, believed to ...

Austin's Lady Bird Lake continues to yield bodies of predominantly male victims, raising questions about serial killer ...

Unknown Serial Killers of America premieres on Oxygen on Sunday, May 18, at 7pm E.T. unknownserialkillers_s1_3000x3000_mediavillage_keyart ...

The new Oxygen original series Unknown Serial Killers of America premieres Sunday, May 18 at 7/6c. The new series, which consists of six hour-long episodes, covers some of the nation’s most ...

Unknown Serial Killers of America episode 4 explores the series of crimes committed by Terry Rasmussen and his conviction in 2002. The episode made its release on Oxygen on June 8, 2025.

Unknown Serial Killers of America news coverage including articles, photos, videos & more. Add a Show Listing: TV. Sign-up: News on your favorite shows, specials & more! EXPLORE REGIONS. TV.

Police believe Herb Baumeister targeted gay men and buried at least 25 victims on $1 million Indiana estate in the 1990s.

Yet another body has been found in Lady Bird Lake, where some residents suspect a murderer has been on the loose.

Get all the details on the new "Unknown Serial Killers of America" docuseries premiering today, May 18. Find out how to watch for free.