- Simon Oakland - Absalom MacBride
- John McGiver - Horatio T. White
- Darren McGavin - Amos Champion
- Jill Haworth - Timothea Farley
- Eddie Albert - Gregg Roberts
- Pippa Scott - Jane Tyler
- Ray Fulmer - Jack Fisher
- Harry Millard - Hunt
- Charles Alvin Bell - Bank Manager
- Jo De Winter - Martha
- J.D. Cannon - Paul Mannix
- Diana Van der Vlis - Ellen Bradwell
- John Lasell - George
- John Hale - Able
- John Hale - Clerk
- Christine White - Claire
- Woodrow Parfrey - Thayer
- Robert Nash - Secretary Stockholders Meeting
- Jewell Lain - Secretary
- Lawrence Green - Man
- Ann Staunton - Woman
- Russell Arms - Armbruster
- Susanne Cramer - Nicol
- Malachi Throne - Commissar Szigeti
- George Kennedy - Major Vyx
- Gilbert Green - Kazinczy
- Stephen Bekassy - Zichy
- Ilona Wilson - Svarna
- Elsa Martinelli - Maria Kuzenkov
- Robert Ellenstein - Nevsky
- John Wengraf - Drozhin
- John Hoyt - Spigal
- Peter Brocco - Berg
- John Banner - Steiner
- Chuck Hicks - Wrangel
- Eric Micklewood - Jewelry Salesman
- Susan Oliver - Melinda
- Lloyd Gough - Hubert Crayle
- Alan Napier - John McKellway
- John Alderson - Bill
- Noel Drayton - Jacky
- Peter Forster - Supt. Ames
- Ben Wright - Constable Huggins
- Arthur Gould-Porter - Leaming
- Cicely Walper - Mrs. Burton-Thomas
- Broderick Crawford - Amos Cavanaugh
- Milton Selzer - Gilbert Foster
- Jean Hale - Elizabeth Cavanaugh
- Jacqueline Beer - Jeanne
- Steven Geray - Henri
- Alice Backes - Watkins
- Ernestine Barrier - Woman
- Emil Sitka - Man
- Madeleine Taylor Holmes - Woman
- Martin Kosleck - Fischer
- Martin Kosleck - Jobka
- Sally Kellerman - Ilsa Huntington
- Howard Duff - G. Carter Huntington
- Jonathan Hole - Hotel Clerk
- Jonathan Hole - Teller
- Edgar Stehli - Edgar
- John Newton - Wilson
- Richard Peel - McClintock
- Kendrick Huxham - Gravekeeper
- Tol Avery - Chief
- Greta Chi - Aimee
- Greta Chi - Rinl
- Dianne Foster - Alice Singer
- Gavin Muir - Rutledge
- Don Marshall - Chalo
- Marcel Hillaire - Le Beau
- Marcel Hillaire - Rorvik
- George Pelling - Havelok
- Zachary Scott - Le Chat
- Laura Devon - Barbara Cayasta
- James Griffith - Bert
- Bill Quinn - Commander Duncan
- George Sawaya - Panuji
- Jim Boles - Samuel Bone
- Louise Lorimer - Dowager
- Bill Neff - Hotel Manager
- Paul Sorensen - Engineer
- Diana Hyland - Celeste Martel
- Helmut Dantine - Colonel von Reichert
- Channing Pollock - Lumindorf
- Mimi Heinrich - Lisa
- Ivan Triesault - Mitter
- Alex Gerry - Papa Hans
- Clark Howat - Peter Stewart
- Clark Howat - P. R. Man
- Konstantin Shayne - Commandant
- Oscar Beregi Jr. - Herr Brand
- Anthony Eustrel - Waiter
- Gia Scala - Lisa de Monteforte
- Everett Sloane - Dubrovin
- Nico Minardos - Spiro Deleanos
- Louise Latham - Catherine DeMontrachet
- John Orchard - Creighton
- Christopher Dark - General Buto Savin
- Christopher Dark - Ali Mahmud
- Edward Colmans - Henri
- Alberto Morin - Montrachet
- Loie Bridge - Tourist
- Nelson Welch - Clergyman
- Nelson Welch - Flint
- Roger Til - Bank Official
- Bella Bruck - Madelaine
- Joanna Moore - Annabelle MacBride
- Jorja Curtright - Amelia MacBride
- Vincent Van Lynn - Ashley MacBride
- Cliff Osmond - Sheriff Todd
- Ed Gilbert - Gerber
- Ed Gilbert - Pieter
- Ed Gilbert - Karl
- Howard Freeman - Orrin Banes
- Napoleon Whiting - Harrison
- Jill St. John - Jena Tate
- Gerald Mohr - Carl Votrian
- Eileen Baral - Monique
- Jonathan Farwell - Paul Hammer
- Mathilda Calnan - Concierge
- Jason Wingreen - Spiv
- Charles La Torre - Doctor
- Dana Wynter - Madame Ka
- Brendan Dillon - Quimby
- Guy Lee - Rini's Brother
- Gerald Jann - Mme. Ka's Guard
- Barry Ford - Airline Clerk
- Barbara Eden - Sally Cardew
- Vincent Gardenia - Chief Inspector
- Vincent Gardenia - Inspector
- Estelle Winwood - Lady Rachel
- Robert Webber - Guy Gabriel
- Lawrence Montaigne - Brian Walker
- Lawrence Montaigne - Guard
- John Abbott - Sir Egbert
- Hilda Plowright - Lady Brayford
- Lester Matthews - Bailiff
- Margaret Mason - Avis
- Jocelyn Lane - Madeleine Sorel
- Jonathan Harris - Paul Duval
- Robert H. Harris - Otto Anhalt
- James Frawley - Inspector Charles Jouet
- Nadia Sanders - Party Girl
- Nadia Sanders - Salesgirl
- Felix Locher - Hans
- James Lanphier - Swiss Detective
- John Williams - Inspector Robert Briscoe
- John Williams - Insp. Robert Briscoe
- Albert Carrier - Jean Sorel
- Theodore J. Flicker - Antique Dealer
- Robert Easton - Barman
- Len Lesser - Priest
- Hedley Mattingly - Hutchins
- Michael St. Clair - Inspector
- Doris Lloyd - Mrs. Hackett
- William Beckley - Young Man
- George Sanders - Leonard Carvel
- Larry Hagman - Mark Fleming
- Dina Merrill - Clothilde Bonheur
- Robert Phillips - Milo Vargas
- Robert Phillips - Spector
- Camilla Sparv - Helene
- Angela Greene - McTeague
- Molly Dodd - Goldberg
- Lou Krugman - Harry
- Remo Pisani - Gendarme
- George Hamilton - Jamie
- Ida Lupino - Arlene
- Patricia Medina - Countess Marissa Maricelli
- Brooke Hayward - Kate
- Jerry Douglas - Harcourt
- Reggie Nalder - Sadakichi
- Stephen Coit - Gompers
- Suzy Parker - Carol Conover
- Ken Scott - Michael Arno
- Sarah Marshall - Laura Manning
- James Doohan - Cutler
- Simon Scott - Gus Becker
- Buddy Lewis - Monty Clayver
- Joseph V. Perry - Waiter
- Mustapha Pasha - Manabu
- Collier Young
James Griffith interpreta a Bert en la serie.
Helmut Dantine interpreta a Colonel von Reichert en la serie.
George Sanders interpreta a Leonard Carvel en la serie.
Robert Ellenstein interpreta a Nevsky en la serie.
John McGiver hace el papel de Horatio T. White.
George Hamilton interpreta a Jamie en la serie.
James Doohan hace el papel de Cutler.
David Niven hace el papel de Alec Fleming.
Charles Boyer hace el papel de Marcel St. Clair.
Robert Coote hace el papel de Timmy St. Clair.
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