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When Mary Gough is found dead in her family home, her husband Colin Whelan appears shocked.

When Mary Gough is found dead in her family home, her husband Colin Whelan appears shocked.

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World's Most Evil Killers

S7, EP14 "Paul Michael Stephani"

The story of a killer who was infamous for his whimpering confessions over the phone after each of his murders.

World's Most Evil Killers

S8, EP17 "Colin Whelan"

When Mary Gough is found dead in her family home, her husband Colin Whelan appears shocked.

World's Most Evil Killers

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.

World's Most Evil Killers

S8, EP11 "Harry Jarvis"

When Carol Jarvis disappears, her husband tells friends and family that she's simply gone on a little holiday.

World's Most Evil Killers

S9, EP19 "Joel Rifkin"

A traffic stop revealed a body, exposing Joel Rifkin's deadly spree against vulnerable women.

World's Most Evil Killers

S9, EP17 "Emanuel Webb"

A decade-old link revealed a serial killer who kept the same M.O. after moving far away.

World's Most Evil Killers

S9, EP12 "William Devin Howell"

Gardener William Howell used his van as a "murder mobile," killing women and dumping bodies.

World's Most Evil Killers

S9, EP10 "Christopher McGowan"

Claire Inglis became trapped with violent offender Christopher McGowan, leading to tragedy.

An in-depth look at some of the world's most dangerous murderers.
Starring: Andy Gatenby, Christopher Kouros, Elizabeth Yardley, Gareth Lawrence, Geoffrey Osborne, Geoffrey Wansell, Harold Schechter, Helen Morrison, Jane Monckton-Smith, Jeff Longland, Roberto Vivancos, Ross Huguet, Stuart Hamilton, Terri Lemoine, Tom Bonington
Original Air Date: Aug 10, 2017
Genres: DocuseriesTV Series
Rating: MA 15+
Playback: HD
9 seasons available on demand
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