Jack Shepherd
— DCC John Stalker
David Calder
— DCS John Thorburn
Patrick Drury
— Detective Inspector
Daragh O'Malley
— Constable 'Y'
George Shane
— DCI Samuel George Flanagan
Richard Hawley
— Constable John Robinson
T. P. McKenna
— Chief Constable Sir John Harmon
Philip Bretherton
— DI Gaffrey
Barry Birch
— Michael Tighe
Vass Anderson
— Magistrate
Emer McCourt
— E4A Officer
Jane Cunliffe
— DS Eileen Scarrett
Niall Cusack
— Pat Finucane
Fraser Downie
— DCI Jim Smellie
Christopher Dunne
— E4A Officer
Peter Cellier
— MI5 Senior Officer
Colin Carnegie
— Expert
Paul Brennan
— Soldier
Denys Hawthorne
— Professor
James Greene
— DPP
Gerard Horan
— E4A Information Handler
Mark Jordon
— DS Keith Farrington
B.J. Hogg
— E4A Officer
Des McAleer
— CID Supt. Jimmy Richards
Mark Moraghan
— SB Constable
Michael O'Hagan
— Special Branch Superintendent
Tip Tipping
— Jervais McKerr
Nick Stringer
— Kavin Taylor
Kevin Stoney
— Judge Kelly
Michael Simkins
— DI Brian Jackson