Oxygen True Crime, known for gripping series like Snapped and Cold Justice, is set to premiere Unknown Serial Killers of America, a new six-episode show on Sunday, May 18, 2025, at 7 p.m. ET/PT, following a new episode of Snapped. The series explores the shocking tales of lesser-known serial killers who flew under the radar of public awareness despite their heinous crimes, keeping pace with the brutality of such notorious names as Jeffrey Dahmer or Ted Bundy.
Through firsthand testimony from law enforcement, victim families, and chilling evidence such as confessions, the show reveals how these killers worked in the dark. Produced by Pantheon Media Group, it features executive producers Steven Michaels, Jodi Flynn, and showrunner Haylee Vance. The Official Synopsis reads:
“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.”
Everything to know about the Unknown Serial Killer of America
Unknown Serial Killers of America is a six-episode true-crime series premiering on Oxygen True Crime on Sunday, May 18, 2025, at 7:00 p.m. ET/PT, following Snapped. Each episode airs weekly on Sundays, concluding on June 22, 2025. Viewers can watch live on Oxygen via cable providers or streaming services like Hulu with Live TV, YouTube TV, or Sling TV in the U.S. For streaming, episodes are available on Peacock the day after airing, starting May 19, 2025.
The series explores lesser-known serial killers who evaded public attention, matching the brutality of notorious figures. It features firsthand accounts from law enforcement and victim families, uncovering cases like bodies found in barrels, murders of gay men, and a killer caught by video evidence. Produced by Pantheon Media Group, the show uses confessions and forensic evidence to reveal how these murderers operated in the shadows for years. The information ensures viewers can plan to watch the show live on Oxygen or stream it later on Peacock.
| Region | Time Zone | Premiere Time (May 18, 2025) |
|---|---|---|
| United States (Eastern Time) | ET (UTC-5) | 7:00 PM ET |
| United States (Pacific Time) | PT (UTC-8) | 4:00 PM PT |
| United Kingdom | BST (UTC+1) | 12:00 AM (May 19, 2025) |
| India | IST (UTC+5:30) | 4:30 AM (May 19, 2025) |
| Australia (Eastern) | AEST (UTC+10) | 9:00 AM (May 19, 2025) |
| Canada (Central) | CT (UTC-6) | 6:00 PM CT |
| Japan | JST (UTC+9) | 8:00 AM (May 19, 2025) |
Episodes of Unknown Serial Killers of America on Oxygen
America hasn't heard of these prolific serial killers… until now. Get an inside look into the minds of these unconscionable criminals when Unknown Serial Killers of America premieres May 18 on Oxygen True Crime. pic.twitter.com/yB4Ds79IpI
— Oxygen True Crime (@oxygen) April 24, 2025
Unknown Serial Killers of America‘s hour-long episode delves into a new case through law enforcement testimony, victim-family interviews, and evidence such as confessions, uncovering how these killers went undetected. Below are episode and case details based on available information.
Episode 1 (May 18, 2025): Confession of a Slasher
This episode features a slasher who confessed to over 100 murders, detailing a decades-long killing spree. The confession, paired with forensic evidence, helped identify victims. Interviews with investigators explore the killer’s psyche and methods, while family stories highlight the widespread impact. The episode examines how the killer’s unassuming demeanor allowed them to evade suspicion for so long.
Episode 2 (May 25, 2025): Video Evidence Breakthrough
The episode profiles a murderer who killed 13 Black women, avoiding capture until chilling video evidence surfaced. The footage exposed the killer’s methodical planning. Interviews with detectives and forensic experts explain how the video led to the suspect, while victim family accounts emphasize the case’s toll. The episode explores how the killer exploited societal oversight to remain undetected.
Episode 3 (June 1, 2025): Florida Hog Trail Killings
This case involves five bodies found on Florida’s hog trails, with the investigation stalling until two men escaped the killer. Years later, eight more bodies were discovered nearby, suggesting the same perpetrator. The episode uses law enforcement interviews to detail the challenges of connecting the crimes and the killer’s elusive tactics, with survivor accounts adding depth.
Stay tuned for more news and updates on the Unknown Serial Killers of America
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Hilfa, Senior Writer at Hilvaro, excels in pop culture journalism. She crafts engaging content on movies, TV, & trends, fueled by her love for storytelling & entertainment.
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