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World's Most Evil Killers
An in-depth look at some of the world's most dangerous murderers.
S7, EP1 "Stephen Unwin & William McFall"
After striking up a friendship in prison for previous murders, Stephen Unwin and William McFall's release had awful consequences.
S8, EP19 "Catherine Nevin"
Catherine Nevin reports a break-in and violent attack at her pub, which leaves her husband dead.
S8, EP15 "Nicholas Burton"
In April 1997, 27-year-old Rachel McGrath is stabbed to death by an unknown attacker in a car park.
S7, EP12 "Charles Albright"
A career criminal who was convicted of one murder and suspected of two others, Charles Albright was notorious for keeping eyes as trophies.
S8, EP20 "Eric Locke"
Dublin man Eric Locke refuses to accept it when Sonia Blount, a mother of one, ends their relationship.
S8, EP19 "Catherine Nevin"
Catherine Nevin reports a break-in and violent attack at her pub, which leaves her husband dead.
S8, EP18 "Charlotte and Linda Mulhall"
In March 2005, the gardaí recover human body parts from the Royal Canal in Dublin.
S8, EP17 "Colin Whelan"
When Mary Gough is found dead in her family home, her husband Colin Whelan appears shocked.