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World's Most Evil Killers
An in-depth look at some of the world's most dangerous murderers.
S5, EP5 "Lonnie David Franklin"
Lonnie David Franklin Jr. is better known by the nickname Grim Sleeper.
S8, EP18 "Charlotte and Linda Mulhall"
In March 2005, the gardaí recover human body parts from the Royal Canal in Dublin.
S8, EP11 "Harry Jarvis"
When Carol Jarvis disappears, her husband tells friends and family that she's simply gone on a little holiday.
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.