- Eduard Franz - Mr. Balzar
- Nico Minardos - Gino
- Terence de Marney - Owen Platt
- Al Ruscio - Luis Aguilar
- Bern Hoffman - Rudolpho Montalmo
- Larry Hudson - Bellboy
- John Hart - Pilot
- Merry Anders - Annette Du Blanc
- Thomas Browne Henry - Dolph Schilling
- George Brenlin - Paul Stratt
- Milton Parsons - Hugo
- Steve Gravers - Bellai
- Arthur Marshall - Mr. Lamra
- John Craven - Nicholas
- Suzanne Lloyd - Isabella De Seville
- James T. Callahan - Ted Baylor
- Robert Brown - Hakim Ben Shanpara
- William Henry - Dave Holiday
- George Khoury - Faisal
- Emory Parnell - Arab # 1
- Fred Scheiwiller - Arab # 2
- Michael Vandever - Gilbert Stroud
- Kathleen Freeman - Emma Stroud
- Louise Lorimer - Hilda Thorgensen
- Guy Wilkerson - Sheriff Hoxie
- Stefanie Powers - Jennie Corbie
- Gordon Jones - Nels Bergstrom
- Lomax Study - Tou Tou
- Erika Peters - Mirelle
- Cathleen Cordell - Caroline Agoura
- David Cross - Tanguy
- John Sutton - Herbert Guiles
- Alan Napier - Alexander Pinley
- Theo Marcuse - Paul Agoura
- Theo Marcuse - Baw
- Kendrick Huxham - Henry Haldane
- Justice Watson - Creel
- Jay Novello - Kang
- Hugh Sanders - Woodside
- Aki Aleong - Dau
- Walter Reed - Sad Sam Clark
- Jackie Loughery - Shirley Nielson
- Barry Russo - Teddy Thomas
- John O'Neill - Al Hallman
- John Zaremba - B.J. Montgomery
- Susan Cummings - Valerie Hoveen
- Charles Cooper - Anthony McCord
- Sheldon Allman - Albert Casson
- Marcel De La Brosse - Waiter
- Werner Klemperer - Jan Hoveen
- Irene Hervey - Thelma Henderson
- Frank Ferguson - Walter Henderson
- Richard Garland - Rex Atwood
- Robert Brubaker - Chief Canfield
- Arthur Gould-Porter - Inspector Freemantle
- Frances Morris - Myra Leech
- Gertrude Michael - Kay Salisbury
- Myron Healey - Alex Bertani
- Britt Lomond - Ernie Boros
- Frank Wilcox - Roy Eland
- Frank Richards - Clyde Harle
- Lennie Bremen - Jocko Hamrick
- Phillip Pine - Sr. Campos
- Joyce van der Veen - Carmen Maestre
- Margarita Cordova - Chelo
- Jan Arvan - Carlos Andrade
- Donald Lawton - Andrade
- Freddie Roberto - Don Bernabe
- Ruth Hussey - Maid
Rick Jason interpreta a Robin Scott en la serie.
Jean Blake Fleming hace el papel de Phyllis Collier.
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