How to watch Unknown Serial Killers of America in Australia

How to watch Unknown Serial Killers of America (2025)

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Here’s everything you need to know about the chilling true-crime docuseries, Unknown Serial Killers of America—streaming details, full episode guide, cast list, and answers to your most asked questions.

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Unknown Serial Killers of America (2025) Synopsis

Unknown Serial Killers of America is a gripping six-part docuseries that shines a spotlight on some of the most dangerous but little-known murderers in U.S. history. Unlike headline-dominating criminals, these killers operated in the shadows, avoiding media scrutiny for years. Through powerful interviews with law enforcement officials, victim families, and criminal profilers, the show uncovers how these predators eluded capture—and how they were eventually brought to justice. Each weekly episode dives into one terrifying case, offering never-before-seen footage and disturbing firsthand accounts.

Where to Watch Unknown Serial Killers of America in Australia

You can watch Unknown Serial Killers of America in Australia on Hayu or through the Hayu Prime Video Channel. Both platforms offer on-demand access to all six episodes of the series. Simply subscribe and start streaming on your preferred device.

Unknown Serial Killers of America Season 1 – Full Episode Guide

Here are the episodes:

Episode 1 – Carl Watts (May 18, 2025)
A disturbing dive into the case of Carl Watts, suspected of over 100 murders and set for early release. An eyewitness reemerges, threatening to stop a killer from walking free.

Episode 2 – William Suff (May 25, 2025)
The “Riverside Prostitute Killer” murdered 13 women in California during the 1990s, until a brave escapee helped police track him down.

Episode 3 – Daniel Conahan (June 1, 2025)
With bodies piling up along Florida’s hog trails, a chilling pattern emerges—two survivors point to a serial predator who may have murdered many more.

Episode 4 – Terry Rasmussen (June 8, 2025)
Barrels containing unidentified victims lead to a decades-long investigation of a serial chameleon who used multiple aliases across states.

Episode 5 – Maury Travis (June 15, 2025)
In Missouri and Illinois, twelve Black women are brutally killed. The murderer taunts police with disturbing footage, revealing a depraved obsession.

Episode 6 – Herb Baumeister (June 22, 2025)
Gay men start vanishing from Indiana nightlife. An amateur detective’s trail of clues uncovers a horrifying story behind a suburban façade.

Unknown Serial Killers of America (2025) Cast

This docuseries features real-life experts and contributors including:

Law enforcement officials involved in the original cases
Victim family members and survivors
Criminal profilers and forensic analysts
True crime authors and journalists

**Is Unknown Serial Killers of America Suitable for All Ages?**

No, this series is intended for mature audiences only. It contains graphic discussions of murder, real crime scene footage, and disturbing reenactments. Viewer discretion is strongly advised, especially for those under 18.

FAQs

Q1: What makes these killers “unknown”?
These murderers avoided media headlines and operated under the radar, often exploiting police blind spots and jurisdictional divides, making them less recognizable than more infamous names.

Q2: Is this series part of Oxygen’s “Snapped” franchise?
No, while it shares the same investigative tone and true crime storytelling, Unknown Serial Killers of America is a standalone series by Oxygen True Crime.

Q3: Is the series based on a book or podcast?
No, the series is an original production by Oxygen, developed through direct research and interviews.

Q4: Can I watch with closed captions or audio descriptions?
Yes, closed captioning is available on all official streaming platforms including Hayu.

Q5: Is there a Season 2 planned?
As of now, there’s no official announcement for a second season, but given the series’ early popularity and the depth of available material, it’s highly possible.

Unknown Serial Killers of America Trailer

Here’s the trailer:

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