World's Most Evil Killers, John Eric Armstrong 3

S8 E1 • 45m • HD15

Mother-of-one Paige Birgfeld went missing in 2007 and her remains were found five years later. A decade on, police closed the net on a local mechanic.

S8 E2 • 45m • HD15

In 1973, Dawn Magyar's body was found two months after she had vanished. Twenty-eight years on, advances in forensic technology helped solve the case.

S8 E3 • 45m • HD12

In 1999 and 2000, John Eric Armstrong prowled Detroit looking for sex workers. A seemingly ordinary family man, no one suspected he was a killer.

S8 E4 • 46m • HD15

Over a 25-year career of murder, Richard Biegenwald killed at least six people as he sought out ever more violent and inventive ways of dealing death.

S8 E5 • 46m • HD12

For Richard Kuklinski, crime was his way of life. Described as a man who killed for profit, Kuklinski's unusual methods led to a disturbing nickname, The Iceman.

S8 E6 • 45m • HD15

When police in Colorado interrogated Richard Paul White about the murder of his friend, he began confessing to even more horrifying crimes.

S8 E7 • 44m • HD15

From 1975 and 1980, Billy Mansfield Jr murdered at least five victims, but investigators suspect the extent of his serial killing is still to be revealed.

S8 E8 • 46m • HD15

Randy Kraft was a well-spoken, well-respected computer expert - and a serial killer. Convicted of murdering 16 men, he's suspected of killing more than 60 victims.

S8 E9 • 44m • HD15

Working as a long-distance truck driver, American serial killer Wayne Adam Ford strangled and dismembered his victims before disposing of their bodies in creeks and rivers.

S8 E10 • 45m • HD15

After 21-year-old Jarrae Estepp's body was found at a recycling centre, police discovered that her murderer, Steven Dean Gordon, had killed before.