Everything you need to know about World's Most Evil Killers
World’s Most Evil Killers lifts the lid on some of the world’s most notorious serial killers and murder cases.
Throughout each episode, viewers are walked through the murderer’s crimes, including how they committed it, those who were victims to their harrowing violence, and the killer’s background.
With the help of archival footage, trial reports, expert testimonies by criminologists and psychologists, and officers who were involved in the case, World’s Most Evil Killers talk about how the killer was finally caught and convicted.
Launching in 2017, World’s Most Evil Killers is a sister series to Britain’s Most Evil Killers and Ireland’s Most Evil Killers.
How many seasons of World's Most Evil Killers are there?
World's Most Evil Killers has aired for eight seasons.
Season nine launches in January 2025.
At the time of writing (December 2024), 81 episodes of World's Most Evil Killers have been commissioned.
Each episode runs for 45 minutes, with seasons running on average between 10 and 12 episodes, with the exception of season eight, which runs for five.
Who stars on World’s Most Evil Killers?
While the show has a revolving cast of psychologists and experts, there are two recurring faces throughout the show’s run.
Dr Elizabeth Yardley has appeared in 68 of the available episodes, and is the Associate Professor of Criminology and Director of the Centre for Applied Criminology at Birmingham City University. She is co-author of multiple books on killers and serial killers, including Making Sense of Homicide, Social Media Homicide Confessions: Stories of Killers and their Victims, and Female Serial Killers in Social Context: Criminological Institutionalism and the Case of Mary Ann Cotton.
Geoffrey Wansell is a journalist, broadcaster and author, who has appeared in 60 episodes at the time of writing. His area of expertise is true crime and biographies, publishing 12 books to date, including The Bus Stop Killer, which covers the crimes of Levi Bellfield and murder of Milly Dowler, and An Evil Love: The Life and Crimes of Fred West.
What cases have been covered on World's Most Evil Killers?
World's Most Evil Killers has run for over 80 episodes, covering some of the most well-known criminal cases from across the world.
Key episodes include:
- John Wayne Gacy (S1, E5)
- Jeffrey Dahmer (S1, E6)
- Ed Gein (S1, E7)
- Ed Kemper (S2, E1)
- Richard Ramirez (S2, E2)
- Rodney Alcala (S2, E6)
- Ted Bundy (S3, E1)
- Aileen Wuornos (S3, E2)
How to watch World's Most Evil Killers on Sky
World's Most Evil Killers seasons one to eight are available in full now on Sky Crime and NOW.
Season nine begins January 14th, with new episodes airing every Tuesday.
Got Sky? Hit the 'Watch now' button below and start watching straightaway on Sky Go.
New to Sky? Buy now and start watching today on compatible devices on Sky Go.