Oxygen, the home of high-quality, true-crime programming, examines the most heinous type of criminals there are — serial killers. Yet for every Dahmer or Bundy, there are many more equally as terrifying that the public is completely unaware. 
 
The new series Unknown Serial Killers of America premieres Sunday, May 18 at 7 p.m. ET/PT on Oxygen following a new episode of Snapped.

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 accounts from law enforcement who worked the cases and stories from loved ones of the victims, the series sheds light on serial killers who evaded the spotlight and examines how they were able to get away with their gruesome crimes for so long. 

Crimes explored over the six-episode season include a case involving multiple unidentified bodies found in a barrel that are linked to a predator of women and children decades later; killings of multiple gay men; and an amateur sleuth who uncovered clues leading to a likely killer and a murderer of 12 black women who eludes authorities until chilling video evidence is found.

Upcoming episodes include:

“Carl Watts” (May 18 at 7 p.m. ET/PT)

Chilling confessions from a vicious slasher detail only some of his 100+ victims. When he’s set to be the first serial killer ever released from prison, an eyewitness from decades prior could force justice on the man who vows to kill again.

“William Suff” (May 25 at 7 p.m. ET/PT)

In the ’90s, a deranged killer stalks sex workers in Riverside, Calif., claiming the lives of 13 women. When a would-be victim describes the perp to police, the race is on to catch the murderous john before he strikes again.

“Daniel Conahan” (June 1 at 7 p.m. ET/PT)

Five corpses are found on the Florida hog trails. The investigation stalls until two men narrowly escape the perp’s clutches. Years later, eight more bodies are found in nearby woods, leaving police to wonder if it’s the same evil killer.

Unknown Serial Killers of America is produced by Pantheon Media Group. Steven Michaels, Jodi Flynn, Andi Walker Ochoa, Ariel Brozell, Steffanie Siebrand, Elvia Van Es Oliva and Haylee Vance (showrunner) executive produce.

About Oxygen True Crime

Oxygen True Crime is a multiplatform crime destination for women. Oxygen True Crime remains one of the fastest-growing cable entertainment networks with popular original programming, including the flagship Snapped franchise, Cold Justice, Killer Relationship with Faith Jenkins and breakout event specials such as The Pike County Murders: A Family Massacre, Selena & Yolanda: The Secrets Between Them, and Murdered and Missing in Montana. The network had its best year ever in 2023 in total viewer cable rankings in all day and primetime thanks to one of cable’s most-engaged audiences. Oxygen True Crime’s over-the-air platform recently launched in select U.S. markets. Oxygen True Crime is part of NBCUniversal’s Entertainment portfolio, which includes NBC, Bravo, E!, Oxygen True Crime, SYFY, Universal Kids, USA Network and Peacock. For more information, visit oxygen.com.   

About Pantheon Media Group

Pantheon Media Group, formerly Asylum Entertainment Group, is a premier Emmy® Award-winning production powerhouse dedicated to delivering groundbreaking content across live events, factual entertainment, premium documentaries, true crime, sports and more. Part of WME’s unscripted content business in Los Angeles, Pantheon oversees nearly 20 leading production labels, including Done+Dusted, Film 45, Texas Crew Productions, Breaklight Pictures, Big City TV and is behind acclaimed projects such as Omnivore (Netflix), Shaq (HBO), How I Caught My Killer (Hulu) and the 47th Kennedy Center Honors (CBS).

Led by Chairman Steve Michaels and CEO Jen O’Connell, Pantheon Media Group continues to expand its global reach through strategic partnerships, creative ventures and investments in innovative studios such as Ladywell Films, Soho Studios and DARE Pictures. With offices in Los Angeles, London, Dubai and Vancouver, Pantheon remains committed to crafting compelling storytelling that resonates worldwide.