Killer Psychopaths

The Devil's Disciple (Season 1, Episode 5)

TV Episode | Documentary, Crime

The case of British serial killer Patrick David Mackay who is suspected to have murdered up to 13 people in the 1970s.

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Release date

Apr 21, 2015 (United Kingdom)

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Cast	+ Add Cast
15 cast members

Name	Known for
David Wilson Self - Presenter (as Professor David Wilson) Self - Presenter (as Professor David Wilson) See fewer	Dark Angel (2016)
Jack Farrar Patrick MacKay Patrick MacKay See fewer	Killer Psychopaths (2015)
Margot Richardson Isabella Griffith Isabella Griffith See fewer	Set the Thames on Fire (2015)
Ellie Dickens Adele Price Adele Price See fewer	Cry Havoc! Ask Questions Later (I) (2023)
Alexander Theodossiadis Anthony Crean Anthony Crean See fewer	Whitelines (2015)
Juan-Carlos Salvatierra Young Patrick MacKay Young Patrick MacKay See fewer	Killer Psychopaths (2015)
Alina Serban Marian MacKay Marian MacKay See fewer	Letter of Forgiveness (2020)
Allen Watts Harold MacKay Harold MacKay See fewer	The Red Hallow
David Crinnion Self - Met Police 1970-2001 Self - Met Police 1970-2001 See fewer	Killer Psychopaths (2015)
Roland Hayes Self - Schoolmate Self - Schoolmate See fewer	Killer Psychopaths (2015)
Nick Parry Self - Neighbour Self - Neighbour See fewer	Killer Psychopaths (2015)
John Penycate Self - Author Self - Author See fewer	Betjeman's London (1967)
Julie Stokes Self - Psychologist (as Julie Stokes OBE) Self - Psychologist (as Julie Stokes OBE) See fewer	Killer Psychopaths (2015)
Ken Tappenden Self - Kent Police 1961-93 Self - Kent Police 1961-93 See fewer	The Secret Life of the Motorway (2007)
Elizabeth Yardley Self - Criminologist (as Dr. Elizabeth Yardley) Self - Criminologist (as Dr. Elizabeth Yardley) See fewer	World's Most Evil Killers (2017)