Paul Glenister - DCI Paul Bethell (2002)
Scott Arthur - DCI Paul Bethell (1973)
Steffan Rhodri - Phil ‘Bach’ Rees (2002)
Siôn Alun Davies - Phil ‘Bach’ Rees (1973)
Nia Roberts - Karina Bethell (2002)
Elinor Crawley - Karina Bethell (1973)
Gareth John Bale - DC Geraint Bale
Priyanga Burford - Sita Anwar (2002)
Sharon Morgan - Pat Williams (2002)
Keith Allen - Dai Williams (2002)
Rhys Rusbatch - Dai Williams (1973)
Natasha Vasandani - Sita Anwar (1973)
Calista Davies - Geraldine Hughes
Jade Croot - Pauline Floyd
Kriss Dosanjh - Rohan Anwar
Mathew Gravelle - Seb
Richard Corgan - DS Chris Lewis
Oliver Ryan - DS Ray Allen
Karen Paullada - DS Jackie Roberts
Dyfan Dywfor - DS Vic Jenkins
Steve Nicolson - DI Tony Warren
Aneurin Barnard - Joseph Kappen
William Thomas - Denver Hughes
Richard Harrington - Colin Dark
Ed Whitmore - Writer & Executive Producer
Ed Talfan - Executive Producer
Jonathan Hill - Executive Producer
Rebecca Ferguson - Executive Producer for the BBC
Helen Perry - Executive Producer for the BBC
Hannah Thomas - Producer
Marc Evans - Director
Sam Thomas - Director of Photography
Chris Walker - Production Designer
Dawn Thomas-Mondo - Costume Designer
Jo Evans - Hair & Make Up Designer