Asst. Chief Const. George Oldfield (4 episodes, 2000)
Det. Supt. Dick Holland (4 episodes, 2000)
Chief Const. Ronald Gregory (4 episodes, 2000)
Det. Chief Supt. Jim Hobson (4 episodes, 2000)
Professor David Gee (4 episodes, 2000)
Det. Chief Supt. Will Brooks (4 episodes, 2000)
Det. Chief Supt. Jack Ridgeway (4 episodes, 2000)
Det. Insp. John Boyle (4 episodes, 2000)
Det. Insp. Tony Glendenning (4 episodes, 2000)
Det. Sgt. Peter Smith (4 episodes, 2000)
Det. Sgt. Parks (4 episodes, 2000)
WPC Sue Neave (4 episodes, 2000)
DC Cambrook (4 episodes, 2000)
DC Cleasby (4 episodes, 2000)
DC Wakeman (4 episodes, 2000)
DC Garrett (4 episodes, 2000)
Peter Sutcliffe (4 episodes, 2000)
Margaret Oldfield (4 episodes, 2000)
Gillian Oldfield (4 episodes, 2000)
Christopher Oldfield (aged 13) / Christopher Oldfield, aged 13 (4 episodes, 2000)
Christopher Oldfield (aged 9) (4 episodes, 2000)
Sylvia Holland (4 episodes, 2000)
Tracey Browne (4 episodes, 2000)
Mrs. Browne (4 episodes, 2000)
Detective Chief Superintendent John Domaille (2 episodes, 2000)
Det. Chief Supt. Clark (2 episodes, 2000)
Det. Supt. John Stainthorpe (2 episodes, 2000)
DC Andy Laptew (2 episodes, 2000)
WPC Ruth Ford (2 episodes, 2000)
WPC Susan Phillips (2 episodes, 2000)
DC Greenwood (2 episodes, 2000)
DC Rogan (2 episodes, 2000)
Sergeant Bob Ring (2 episodes, 2000)
DC Sandford (2 episodes, 2000)
DC Marks (2 episodes, 2000)
DC Barkham (2 episodes, 2000)
Keighley Constable (2 episodes, 2000)
Bradford Sergeant (2 episodes, 2000)
Dewsbury Sergeant (2 episodes, 2000)
Professor Stanley Ellis (2 episodes, 2000)
PC Robert Hydes (2 episodes, 2000)
Det. Sgt. Desmond O'Boyle (2 episodes, 2000)
Sonia Sutcliffe (2 episodes, 2000)
Wilf MacDonald (2 episodes, 2000)
Jimmy Furey (2 episodes, 2000)
Irene MacDonald (2 episodes, 2000)
Chapeltown Prostitute (2 episodes, 2000)
Maggie (2 episodes, 2000)
Myra Lawton (2 episodes, 2000)
Terence Hawkshaw (2 episodes, 2000)
Ken Rees (2 episodes, 2000)
Mrs. Hawkshaw (2 episodes, 2000)
Adrian Windows (2 episodes, 2000)
Diane Simpson (2 episodes, 2000)
Rita Rytka (2 episodes, 2000)
Keith McPhail (2 episodes, 2000)
Chauffeur (2 episodes, 2000)
Jane Barker (2 episodes, 2000)
Schoolgirl (2 episodes, 2000)
Rachel Horton (2 episodes, 2000)
Teresa Sykes (2 episodes, 2000)
Barker (2 episodes, 2000)
Mrs. Sykes (2 episodes, 2000)
Mrs. Hill (2 episodes, 2000)
Olivia Reivers (2 episodes, 2000)
Stevenson (2 episodes, 2000)
(1 episode, 2000)
WPC (2 episodes, 2000)
Police Pathologist (2 episodes, 2000)
Nurse (2 episodes, 2000)
News Reporter (uncredited) (1 episode, 2000)
Prostitute (uncredited) (1 episode, 2000)
Bystander (uncredited) (1 episode, 2000)
Policeman in Park (uncredited) (unknown episodes)
Plainclothes Policeman (uncredited) (unknown episodes)
Self - Wearside Jack (uncredited) (unknown episodes)
Female protestor (uncredited) (unknown episodes)