World's Most Evil Killers

Police uncover chilling crimes after finding 30-year-old Kayla Brown tied up and locked in a storage container after being held hostage for 65 days by seemingly respectable estate agent Todd Kohlhepp.

A look at the life and crimes of American serial killer David Richard Berkowitz, known as the 'Son of Sam', who pleaded guilty to eight separate shooting attacks that began in New York City during the summer of 1976.

A profile of a murderer and rapist known as 'The Truck Stop Killer', who targeted hitchhikers and sex workers in a horrific string of crimes that may have claimed the lives of dozens of victims.

In the late 1980s, Bill Suff is a model employee during the day, but nighttime transforms him into a monster who lures sex workers into his van before brutally murdering his victims.

Christopher Hightower was a killer conman who masqueraded as a church leader and duped people out of thousands of dollars. In 1991, the commodities trader slaughtered a family of three after his friend Ernest Brendel lodged a complaint against him.

In 2000, mother-and-son duo Sante and Kenny Kimes were convicted of two murders and suspected of a third, along with robbery, forgery, and other crimes committed throughout the 1990s.

An investigation into the life and crimes of serial killer Richard Chase, whose horrific one-month crime spree claimed the lives of six people and led him to be known as 'The Vampire of Sacramento'.

Looking at the life and horrifying crimes of Angel Maturino Reséndiz, also known as the 'Railroad Killer' due to many of his murders being committed near railways as he travelled across the United States.

Over four months during the late 1970s, a pair of serial killers known as the 'Hillside Stranglers' terrorised Los Angeles, murdering women and girls as young as 12 on the city hillsides.

A look at the life of the American serial killer Daniel Lee Siebert, who received a death sentence for three murders but confessed to claiming the lives of many more vulnerable victims.