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Watch S8, EP16: Joe O'Reilly for $0 Today

12World's Most Evil Killers45mFilmRise

Less than 20 minutes after dropping her children off at school, Rachel O'Reilly is murdered.

Original Air Date: Jan 1, 2024

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Available on demand
Mon, Apr 21, 3:30 PM
Wed, Apr 23, 4:01 AM
Wed, Apr 23, 2:13 PM
Wed, Apr 23, 10:43 PM

More episodes

S4, EP14 "Robert Ben Rhoades"
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S4, EP14 "Robert Ben Rhoades"

Robert Benjamin Rhoades, also known as The Truck Stop Killer, is an American serial killer and rapist.

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S8, EP18 "Charlotte and Linda Mulhall"
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S8, EP18 "Charlotte and Linda Mulhall"

In March 2005, the gardaí recover human body parts from the Royal Canal in Dublin.

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S7, EP3 "Lewis Daynes"
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S7, EP3 "Lewis Daynes"

Exploring a case highlighting the many dangers of online grooming; on 17 February 2014, fourteen-year-old Breck Bednar was lured to a London flat before being killed by a fellow teenager.

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S4, EP12 "Harold Shipman"
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S4, EP12 "Harold Shipman"

Once a respected local doctor in Hyde, Manchester, Dr. Harold Shipman became better known as Dr. Death.

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S8, EP20 "Eric Locke"
Ended

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"
Ended

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"

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"
Ended

S8, EP17 "Colin Whelan"

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


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

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