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World's Most Evil Killers
An in-depth look at some of the world's most dangerous murderers.
S7, EP8 "Adrian Prout"
A master manipulator is accused of the murder of his wife, and is eventually caught out by a polygraph test - and his own fiancée.
S7, EP16 "Heriberto Seda"
A killer who goaded police and media during his spree, Heriberto Seda claimed to kill based on his victims' star signs.
S7, EP6 "Nathan Matthews"
A family's worst nightmare occurs when 16-year-old Becky Watts goes missing, and is found dead days later, murdered by her own stepbrother.
S6, EP3 "Trimaan Harry Dhillon"
A killer attacks his ex-girlfriend in a jealous frenzy and commits a brutal murder after a campaign of harassment.
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.
