Luke Evans
DCS Steve Wilkins (3 eps)
Keith Allen
John Cooper (3 eps)
Caroline Berry
Pat Cooper (3 eps)
Oliver Ryan
Andrew Cooper (3 eps)
Alexandria Riley
DI Ella Richards (3 eps)
Charles Dale
DS Gareth Rees (3 eps)
David Fynn
Jonathan Hill (3 eps)
Steven Meo
DI Lynne Harries (3 eps)
Richard Corgan
DS Glyn Johnson (3 eps)
Kyle Lima
DC Nigel Rowe (3 eps)
Steffan Cennydd
Jack Wilkins (3 eps)
Roger Evans
DCI Jim Morris (uncredited) (3 eps)
Jim Bowen
Self (archive footage) (uncredited) (3 eps)
Simon Nehan
Craig (3 eps)
Rhodri Evan
DCS Coles (2 eps)
Anastasia Hille
Dr. Angela Gallop (2 eps)
Simon Armstrong
Oliver Wakefield (2 eps)
William Thomas
DCI George Jones (1 eps)
Suzanne Packer
Chief Constable Tyler (1 eps)
Mabli Jen Eustace
Amy Wilkins (1 eps)
Hywel Morgan
Prison Governor (1 eps)
Francine Morgan
Parole Board Judge (1 eps)
Joanna van Kampen
Parole Board Member 1 (1 eps)
Andrew MacBean
Parole Board Member 2 (1 eps)
Sue Cook
Self (archive footage) (uncredited) (1 eps)
Rhys Parry Jones
Pub Landlord (1 eps)
Edward Llewelyn
Sergeant (1 eps)
Owen Teale
Gerard Elias QC (1 eps)
Ioan Hefin
Mark Evans QC (1 eps)
Sara Gregory
Leanne Dauncey (1 eps)
Amy Morgan
Erin Davies (1 eps)
Anita Reynolds
Court Usher (1 eps)
Rhiannon Meades
Court Clerk (1 eps)
Sarah Jane
Police Officer (uncredited) (1 eps)
Ian Staples
Jury Foreman (1 eps)