World's Most Evil Killers säsong 6

In 2002, John Allen and his teenage accomplice claimed the lives of 17 people in Greater Washington when they orchestrated a series of brutal shootings known as the 'Beltway sniper attacks'.

The story of one of the most prolific serial killers in Canadian history, dubbed 'The Pig Farmer Killer' by the media, who murdered dozens of people until a missing persons investigation led to his arrest in 2002.

The story of the serial killer Sean Vincent Gillis, who brutally snatched away the lives of eight women during a decade-long killing spree in Louisiana from 1994 until his arrest in 2004.

The story of a serial killer so callous that not even her own son could escape her clutches, Judy Buenoano took at least three lives and became the first woman executed in Florida since 1848.

A terrifying murderer known as 'The East Lansing Serial Killer' snatched away the lives of four people in Michigan before being caught while trying to claim his fifth victim in 1978.

The story of 'The I-95 Killer', Gary Ray Bowles, who became one of the FBI's most wanted fugitives for brutally murdering six men in 1994 before being put on death row and executed in 2019.

The story of The Baton Rogue Serial Killer, known for murdering seven women in the area and sentenced to death for his chilling crimes.

North Carolina serial killer Velma Barfield became the first woman to be executed by lethal injection after taking six lives, including her own mother and a widower whom she had married.

A look at the crimes of serial killer Chester Turner during his decade of terror in Los Angeles, analysing the police's attempt to capture him and the lives of the women he murdered.

The chilling story Genene Jones, a serial killer who worked as a nurse in Texas, where she killed many children and infants by injecting them with drugs.