- Roy Boyd - Stefan
- Jan Francis - Eva Bailey
- Gareth Hunt - Peter Whiteway
- Ewan Stewart - Robin
- Tony Anholt - Dr Marquis
- James Ellis - Father Dowd
- James Laurenson - Luke Lorenz
- Isla Blair - Eileen
- Clifford Rose - Bennet
- Diana King - Madge Bircher
- Carmen du Sautoy - Suzy
- Nicholas Clay - Mike Preston
- John D. Collins - Estate Agent
- Richard Heffer - Brown
- William Hootkins - Lou Delmart
- David Langton - Victor Frankham
- Edward Peel - Prison Officer
- Carol Lynley - Sylvia Daly
- Alan Lake - Davey
- Marcus Gilbert - Young Bray
- Dirk Benedict - Frank Rowlett
- Zienia Merton - Nurse Lee Parquet
- Shirley Knight - Ann Denver
- Peter Wyngarde - Daniel/General Haswell
- Mary Crosby - Ann Preston
- David Carradine - Michael/Harris
- Barbara Keogh - Mrs. Villiers
- Stephen Yardley - Knowles
- Hannah Gordon - Maggie Dowl
- Tom Adams - Westcott
- Season Hubley - Cora Berlaine
- Cristina Raines - Nancy Irving
- David Robb - Vincent Rhodes
- Ralph Michael - Father Harris
- Robert Lang - Det. Sergeant Wells
- Pam St. Clement - Doctor
- Bernard Kay - Mr. Prentice
- Lesley Dunlop - Sarah
- Mollie Maureen - Elderly Lady
- Norman Bird - Henry Bircher
- Sandor Elès - 2nd Desk Clerk
- Michelle Phillips - Sandra Lorenz
- Cyril Shaps - Magnusson
- Burt Kwouk - Lee
- Marius Goring - Angus Aragon
- Dean Stockwell - Greg Denver
- Oliver Tobias - Derek Tucker
- Patricia Hayes - Gran Waters
- Steve Plytas - Head Waiter
- Tom Chadbon - Young Doctor
- Tony Steedman - Chief Inspector
- Michael Gothard - Marvin
- Stephanie Beacham - Rosemary Richardson
- George Sewell - Det. Inspector Grant
- Brian Deacon - Alan/Martin Yardley
- Terence Alexander - Hammond
- Shane Rimmer - Hersh
- Peter Graves - John Bray
- Judy Loe - Betty Mervyn
- Leigh Lawson - Paul Chater
- Deborah Raffin - Selena Frankham
- David McCallum - Frank Lane
- Christopher Cazenove - Frank Daly
- Christopher Ellison - Drury
- Robert James - Father Ambrey/Packard
- Stephen Greif - Clifford
- Ralph Arliss - Redmond Maryott
- Alan Gifford - John Fairfax
- Simon Williams - Bob Appleyard
- Barbi Benton - Caroline Trent
- Derek Benfield - Undertaker
- Robert Rietti - Marcello
- Allan Love - Ray Verne
- Bernard Horsfall - Doctor
- Susan George - Vicky Duncan
- Michael Elwyn - Peter Norton
- Hana Maria Pravda - Mrs. Jiracek
- Peter Vaughan - Bullneck
- Patrick Mower - John Duncan
- David Healy - Jack Mervyn
- Robert Russell - Security Guard 1
- Neil Morrissey - Policeman
- Lewis Fiander - Hoffman
- Jenny Seagrove - Sara Helston
- John Paul - Matt Helston
- Peter Settelen - Det. Sergeant Kirby
- Reginald Marsh - Dr. Melford
- Michael Cronin - Pymar
- Nicholas Field - Billy
- Alibe Parsons - Momma Rose
- Robert Oates - Hara
- Maggie Rennie - Ma Perkins
- Hugh Morton - Butler
- Robert Lee - Chong Woy
- Hilary Crane - Carla
- Tony Sibbald - Wilson
- Roger Milner - Registrar
- Dinah May - Sexy Blonde
- William Derrick - Harfield
- Anthony Chinn - Soo
- Vernon Nesbeth - Sick Man
- Christopher Scoular - Truscott
- Geraldine Gardner - Secretary
- Shevaun Briars - Nurse
- Hugh Dickson - Superintendent
- Michael Fleming - Receptionist
- Norman Mitchell - Commissionaire
- Kenneth Nelson - Jack
- Maciej Karaś - Helmut
- Irene Prador - Hotel Guest
- Suzanne Church - Mother
- Paul Bacon - Roulier
- Timothy Morand - Collier
- Leonard Trolley - Viner
- Robert Swales - Brophy
- Benedick Blythe - Bob
- Marianne Borgo - Madame Roulier
- Johnnie Wade - Taxi Driver
- Peter Attard - Williams
- Kirstie Pooley - 1st Female Model
- Ruth Burnett - 2nd Female Model
- Martin Weedon - Business Man
- Benjamin Feitelson - T.V. Director
- Christian J. Fletcher - Geoff-Male Model
- Vivienne Burgess - Mrs. Prentice
- Brendan Price - Paranormal Research Scientist
- Peter Bland - Policeman
- Marianne Stone - Woman Downstairs
- Anthony Morton - Maitre D'
- Carl Rigg - Hotel Manager
- David Auker - Removal Man
- Sarah Porter - Daughter
- Peter Baldwin - Dr. H. Talbot
- Peter Baldwin - Talbot
- William Morgan Sheppard - Mahaffy
- Mark Heath - Detective Inspector Robinson
- Michael Watkins - Detective Sergeant Harris
- Michael McKevitt - Soames
- Richard LeParmentier - Kates
- Gerald Sim - Vicar
- Indira Joshi - Mrs. Patel
- Jeillo Edwards - Landlady
- David Millett - Police sergeant
- Peggy Aitchison - Bag Lady
- Lynn Clayton - Secretary
- Stephan Chase - Gary
- Fanny Carby - Mrs. Kimble
- Julian Littman - Ron Verne
- Oscar Quitak - Estate Manager
- Forbes Collins - Landlord
- John Patrick - Police Sergeant
- Linda Hayden - Ellen
- Peter Polycarpou - Driver
- Geoffrey Leesley - First Constable
- Alan Stuart - Frogman
- Jessica Marshall-Gardiner - Little Girl
- Diana Malin - Secretary
- Mick Ford - Tony Graham
- Christopher Banks - Vicar
- Tony Millan - Caddy
- David Rose - Policeman
- Stefan Gryff - Inspector
- Catherine Neilson - Maria
- George Mikell - Plains Clothes Policeman
- Jirí Stanislav - Ivan
- Jeremy Burnham - Producer
- Christopher Rozycki - Immigration officer
- Mark Malicz - Porter
- Tessa Wojtczak - Girl on bridge
- Robert East - 1st Desk Clerk
- Christopher Robbie - General Neruda
- Toria Fuller - Paula
- Struan Rodger - Detective Constable Gray
- Andrew Seear - Michael Patson
- Ray Charleson - Marine Officer
- Lindsay Holiday - Tanzi
- Russell Sommers - Young Man
- Erin Donovan - Young Girl
- Mary Greco - Girl in Park
- Geoffrey Colville - Estate Agent
- Carol Royle - Kim/Catherine Parkes
- Gary Waldhorn - Inspector Crane
- Richard Hampton - Pinder/David Pritchard
- Angela Grant - Jill
- Ray Armstrong - Sergeant Mills
- Jona Jones - Policeman
- Tim Pearce - Brinkley/Robert Ford
- Michael Kingsbury - Police Constable Hopkins
- Christopher Farries - Military Aide
- Peter Macklin - Military Policeman
- Simon Sutton - Male Nurse
- Jonathan Newth - Harry
- George Little - Eldridge
- Peggy Sinclair - Matron
- David Cheesman - Bobby
- John Hough
Dean Stockwell interpreta a Greg Denver en la serie.
Roy Boyd interpreta a Stefan en la serie.
Jan Francis interpreta a Eva Bailey en la serie.
Gareth Hunt interpreta a Peter Whiteway en la serie.
Ewan Stewart interpreta a Robin en la serie.
Tony Anholt hace el papel de Dr Marquis.
James Ellis hace el papel de Father Dowd.
James Laurenson interpreta a Luke Lorenz en la serie.
Isla Blair interpreta a Eileen en la serie.
Clifford Rose hace el papel de Bennet.
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