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World's Most Evil Killers
An in-depth look at some of the world's most dangerous murderers.
S6, EP5 "Sarah Williams & Katrina Walsh"
Sarah Williams and Katrina Walsh, the two friends carry out the jealousy-fuelled murder of Sadie Hartley.
S5, EP3 "Jason Marshall"
A look into the case of a sadistic killer who posed as an MI5 agent to torture and murder his victim.
S5, EP6 "Billy Dunlop"
Billy Dunlop killed Julie Hogg in 1989 but was acquitted after two failed trials.
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.
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.
