Born to Kill?

A profile of serial killer Donald Neilson aka the Black Panther, a self-employed builder who was obsessed with reliving his army days and planned his crimes with military precision.

With insights from those who encountered him, experts unravel whether Patrick Mackay was born to kill.

Eye witnesses and experts attempt to unravel the mysteries of serial killer John Linley Frazier's mind. Was he born to kill?

Cary Stayner was a depraved, conscienceless killer who had fooled everyone he'd ever come into contact with. Was he born to kill?

Serial killers Linwood, James and Anthony Briley terrorised a whole city and took the lives of at least ten people - but was murder in their DNA?

A profile of serial killer Hadden Clark, the Cross-Dressing Cannibal. With an older brother also convicted of a shocking murder, might he have been destined to be a killer?

From an early age, others had noticed a dark side to serial killer Thor Christiansen's personality - but was murder his destiny?

Dubbed the Speed Freak Killers, were Wesley Shermantine and Loren Herzog, who'd grown up across the street from each other, born killers? Or had their upbringing led them to begin hunting the ultimate prey?

Paul Bernardo and Karla Homolka were serial killers capable of sickening cruelty, but what drove this seemingly clean-cut couple to their appalling crimes? Were they born to kill?

A profile of Serial Shooters Dale and Jeff and Hausner, and their wayward friend Sam Dietman. Had certain events in their lives turned them into monsters or were they simply born to kill?

In the 1970s, Peter Sutcliffe, one of Britain's most prolific and infamous serial killers, terrorised the north of England. What had driven the Yorkshire Ripper to his crimes? Was he born to kill?

A profile of serial killers Douglas Clark and Carol Bundy, the Sunset Strip Killers. What motivated this killer couple's string of sickening murders?