Self - Narrator (13 episodes, 2013-2015)
Self - Narrator (8 episodes, 2021)
Self - Forensic Psychologist, University of Leicester (3 episodes, 2013)
Self - Behavioural criminologist / Self - Forensic Criminologist (3 episodes, 2021)
Jessica Patel (2 episodes, 2021)
Self - Criminal Psychologist (2 episodes, 2013-2014)
Self - Criminologist, Birmingham City University (2 episodes, 2014-2015)
Self - Evening Standard / Self - London Evening Standard (2 episodes, 2014-2015)
Self / Self - Former Detective Chief Inspector (2 episodes, 2021)
Self / Self - Consultant Forensic Psychologist (2 episodes, 2021)
Jane Andrews (1 episode, 2013)
Dennis Nilsen (1 episode, 2013)
Jonathan Vass (1 episode, 2013)
Narrator (1 episode, 2013)
Jeremy Bamber (1 episode, 2013)
Reenactment Cast (1 episode, 2013)
Lorraine Thorpe (1 episode, 2014)
Sam Greening (1 episode, 2014)
Stacey Mackie (1 episode, 2014)
Gemma McCluskie (1 episode, 2014)
Rebecca Thorpe (1 episode, 2014)
Principal Cast (1 episode, 2015)
Joanna Yeates (1 episode, 2015)
John Taylor (1 episode, 2021)
PCSO (1 episode, 2021)
Penny Beale (1 episode, 2021)
Carol Ann Taggart (1 episode, 2021)
John Wilson (1 episode, 2021)
Natalie Jarvis (1 episode, 2021)
Rakesh Bhayani (1 episode, 2021)
Tommy Cressman (1 episode, 2013)
Brian Lewis (1 episode, 2013)
Julie Mugford (1 episode, 2013)
Jane Clough (1 episode, 2013)
Stephen Dean Holmes (1 episode, 2013)
Paul Clarke (1 episode, 2014)
Terrence Armer (1 episode, 2014)
Tony McCluskie (1 episode, 2014)
Ty Medland (1 episode, 2014)
Michael Tucker (1 episode, 2014)
Vincent Tabak (1 episode, 2015)
Penny Beale Snr. (1 episode, 2021)
Ross Taggart (1 episode, 2021)
Simon Mellors (1 episode, 2021)
Mitesh Patel (1 episode, 2021)
Nicholas Kutner (1 episode, 2021)
Thomas Fuller (1 episode, 2021)
Kenny Stewart Jnr (1 episode, 2021)
Alison (1 episode, 2021)
David Gallichan (1 episode, 2013)
Nevill Bamber (1 episode, 2013)
Hayley Jones (1 episode, 2013)
Jackie Mackie (1 episode, 2014)
Paul Griffin (1 episode, 2014)
Susan Wallace (1 episode, 2014)
Desmond Thorpe (1 episode, 2014)
Greg Reardon (1 episode, 2015)
Michelle Stewart (1 episode, 2021)
Janet Scott (1 episode, 2021)
Carole Waugh (1 episode, 2021)
Michael Moffat (1 episode, 2021)
Adam Whelehan (1 episode, 2021)
Alethea Taylor (1 episode, 2021)
June Bamber (1 episode, 2013)
Laura Ellis (1 episode, 2014)
Rosalyn Hunt (1 episode, 2014)
Principal Cast (1 episode, 2014)
Chris Jefferies (1 episode, 2015)
Senior Police Officer (1 episode, 2014)
(1 episode, 2015)
Sheila's Son (1 episode, 2013)
Police Officer (1 episode, 2014)
Self - Forensic Pathologist (1 episode, 2013)
Self - Criminal Behavioural Analyst (1 episode, 2013)
Self - Royal Editor, Sunday Express (1 episode, 2013)
Self - Homicide, Metropolitan Police 2001-2004 (1 episode, 2013)
Self - Metropolitan Police 1981 - 86 (1 episode, 2013)
Self - Former Friend of Dennis Nilsen (1 episode, 2013)
Self - Essex Police 1975 - 95 (1 episode, 2013)
Self - Lancashire Police (1 episode, 2013)
Self - Hayley's Friend (1 episode, 2013)
Self - Father (1 episode, 2013)
Self - Hayley's Mother (1 episode, 2013)
Self - Press Association 2005-2009 (1 episode, 2013)
Self - The Sun 1981 - 88 (1 episode, 2013)
Self - Prosecuting Barrister (1 episode, 2013)
Self - Childhood Friend of Mark Newall (1 episode, 2013)
Self - Crime Reporter, Lancashire Evening Telegraph (1 episode, 2013)
Self - States of Jersey Police 1983-1989 (1 episode, 2013)
Self - Essex News Service 1983 - 2003 (1 episode, 2013)
Self - Writer and Journalist (1 episode, 2013)
Self - Media Wales 1994-2012 (1 episode, 2013)
Self - Essex Police (1 episode, 2013)
Self - Hayley's Aunt (1 episode, 2013)
Self - Friend & Colleague (1 episode, 2013)
Self - States of Jersey Police (1 episode, 2013)
Self - Mother (1 episode, 2013)
Self - Nilsen's Prison Psychiatrist (1 episode, 2013)
Self - Farm Secretary 1975 - 90 (1 episode, 2013)
Self - Tommy's Best Friend (1 episode, 2013)
Self - Daily Mirror 1976 - 86 (1 episode, 2013)
Self - Tommy's Older Brother (1 episode, 2013)
Self - Psychologist (1 episode, 2014)
Self - Criminologist, Birmingham City University (1 episode, 2014)
Self - Consultant Forensic Psychologist (1 episode, 2014)
Self (1 episode, 2014)
Creepy man (1 episode, 2014)
Self - Norfolk & Suffolk Major Investigation Team (1 episode, 2014)
Self - Father (1 episode, 2014)
Self - Rosalyn Hunt's Brother (1 episode, 2014)
Self - Norfolk / Suffolk Joint Major Investigation team 2003-2010 (1 episode, 2014)
Self - Brother (1 episode, 2014)
Self - Friend (1 episode, 2014)
Self - Former DCI, Metropolitan Police (1 episode, 2014)
Self - Sister (1 episode, 2014)
Self - Sam's Best Friend (1 episode, 2014)
Girl at Swingers Party (1 episode, 2014)
Self - Northwest Evening Mail 2011-2013 (1 episode, 2014)
Self - Senior Reporter, Eastern Daily Press 2010-2013 (1 episode, 2014)
Self - Mother (1 episode, 2014)
Self - Surrey and Sussex Major Crime Team (1 episode, 2014)
Self - Dad (1 episode, 2014)
Self - Regular at the Compasses Inn (1 episode, 2014)
Self - Crime Reporter, The Argus 2010-2014 (1 episode, 2014)
Self - Mum (1 episode, 2014)
Self - Crime Correspondent, East Anglian Daily Times & Ipswich Star (1 episode, 2014)
Self - Cumbria Constabulary (1 episode, 2014)
Self - Forensic Psychologist (1 episode, 2015)
Self - West Country Correspondent, The Sun 2001-12 (1 episode, 2015)
Self - Dad (1 episode, 2015)
Self - Landlord and Neighbour (1 episode, 2015)
Self - Head of Complex Case Unit, CPS (1 episode, 2015)
Self - Metropolitan Police (1 episode, 2015)
Self - Mum (1 episode, 2015)
Self - Son (1 episode, 2015)
Self - Friend of the Family (1 episode, 2015)
Self - Avon and Somerset Police (1 episode, 2015)
Self (1 episode, 2021)
Juror (uncredited) (1 episode, 2014)