- Susan Douglas - Zita Bradford
- Douglass Watson - Charlie
- Joshua Shelley - Tony
- Felicia Montealegre - Elaine
- Lilli Palmer - Julia
- Frankie Thomas - Art
- Bela Lugosi - Gen. Fortunato
- John McQuade - Roy Clade
- Peter Fernandez - Miguel
- Warren Stevens - Bernard Frank
- Richard Boone - Mercer
- Alan Baxter - The Intruder
- Richard Fraser - Club President
- Paul Stewart - Sam Cragg
- Otto Preminger - Captain von Weissenborn
- Paul Ford - Allison
- William Prince - Cunningham
- Virginia Gilmore - Cora Maybee
- Arlene Francis - Eva
- Joan Blondell - Clara
- Judith Evelyn - Mrs. Collins
- Nigel Green - Mr. Williams
- Beatrice Straight - Claire Trent
- O. Z. Whitehead - George Vance
- Dorothy Peterson - Mrs. Morgan
- Mary Sinclair - Danielle
- Robert Middleton - Bill West
- Fay Bainter - Natalie MacLaird
- Murray Hamilton - Snow Pearson
- Richard Waring - Tim Matthews
- Peter Mark Richman - Young Officer
- Martin Kosleck - Hagen
- George Mitchell - Granby Mardis
- Otto Kruger - Chester Crabtree
- Anthony Ross - Albert
- Anthony Ross - Andy Barnes
- Anthony Ross - Cruze
- Peter Capell - Gunner
- Royal Dano - Marvin the Push
- Royal Dano - Lucky
- Royal Dano - Policeman
- Edith Atwater - Louise Lord
- Wally Cox - Ace McCoy
- Marjorie Gateson - Florence Hackett
- Ernest Truex - George Thomas
- Leslie Nielsen - Serge Soudekine
- Signe Hasso - Marilyn Roth
- James Gregory - Jerry
- Eva Marie Saint - Francie
- Walter Matthau - Lawrence Stevens
- Romney Brent - Count Montressor
- George Reeves - D.P. Bradford
- George Reeves - Bill Reed
- George Reeves - Roger Sherman
- Neva Patterson - Mrs. Haley
- Neva Patterson - Kelly Davis
- Kim Hunter - Emily
- Rusty Lane - Jesse
- Luis van Rooten - Police Inspector Jules Maigret
- Luis van Rooten - Monsieur Vidocq
- Basil Rathbone - Dr. Jekyll / Mr. Hyde
- Basil Rathbone - Sherlock Holmes
- Mildred Natwick - Nadia Demarest
- Mildred Natwick - Suspicious Woman
- Claude Dauphin - Redl
- Rita Lynn - Randi Sloan
- Chester Morris - Edwards
- Lloyd Bridges - James
- Herbert Berghof - Durand
- Hugh Reilly - Burt Hastings
- Geraldine Fitzgerald - Anna
- Sidney Blackmer - Dr. Steven Archer
- Dorothy Hart - Miss Barry
- Paul Langton - Winters
- James Daly - Gorden
- Jack Palance - Count Alessandro di Cagliostro
- Jack Palance - Tom Walker
- Peter Hobbs - Cooper
- Ann Rutherford - Sally Hastings
- Logan Ramsey - Rivera
- John Dall - Jim
- Mike Kellin - Policeman
- Mike Kellin - Mr. Wohler
- Stella Adler - Lady Sannox
- Stella Adler - Mother
- Everett Sloane - Nikolayev
- Mark Roberts - Dr. Joseph Parker
- Mark Roberts - Ned Bassett
- Philip Sterling - Ciro
- Henry Brandon - Dr. Douglas Stone
- Eva Gabor - Madeleine De Rochefort
- Olive Deering - Muriel Torres
- Steven Hill - Dolph Romano
- Isobel Elsom - Mme. Constancia
- Anne Sargent - Mary
- Cloris Leachman - Margaret Sou
- Cloris Leachman - Ruth Shaw
- Stephen Elliott - Sam
- Walter Slezak - Dr. Potterton / Richard Morley
- Walter Slezak - Frank Cadwallader
- Robert Webber - James Forsythe
- Lilia Skala - Countess Larisch
- Patty Jenkins - Margaret Bowers
- Darren McGavin - Ted Larson
- Anne Francis - Lois
- Joseph Anthony - Zevich
- John Marriott - Tom
- Thomas Mitchell - Henry Brown
- Thomas Mitchell - Dr. Paul Morgan
- Will Hare - Ernest Bowers
- Will Hare - Tony Grisalla
- Joan Copeland - Louisa Hackett
- Henry Jones - Man at Train Station
- Henry Jones - Mr. Matches
- Paul Newman - Captain Radetski
- Jackie Cooper - Williams
- Jackie Cooper - Murderer
- Jackie Cooper - Dan Crowley
- Don Kennedy - First Cop
- Eddie Albert - Danny Maguire
- Jayne Meadows - Helen Brady
- Connie Clausen - Martha
- Louisa Horton Hill - Alice Martin
- Louisa Horton Hill - Sally Turner
- Franchot Tone - Markheim
- Betty Garde - Eve
- Betty Garde - Mamie Kelly
- Edmon Ryan - District Attorney
- Tom Drake - Dan Bedell
- Rod Steiger - Leo Whaley
- Eberhard Krumschmidt - Mr. Ploss
- Eileen Heckart - Mollie
- Eileen Heckart - Mrs. Haskell
- Eileen Heckart - Margaret Quartermain
- Ruth McDevitt - Mrs. Griffin
- Ruth McDevitt - Mrs. Barret
- Ruth McDevitt - Mrs. Waters
- Ruth McDevitt - Jenny
- Russell Collins - Everett Kelsey
- Tod Andrews - Henry Prince
- Boris Karloff - Rasputin
- Boris Karloff - Bronson
- Boris Karloff - Toff
- Clement Fowler - Kremer
- Ward Bond - Bill Meeker
- John Kerr - Derek Howard
- Richard Kiley - Webb Wilson
- Gaby Rodgers - Alexia
- Gaby Rodgers - Joanie Lennox
- Robert H. Harris - Dr. Tabor
- Robert H. Harris - Takama
- Hume Cronyn - Sig
- Hume Cronyn - Dr. Violet
- Richard Coogan - Investigator Westcott
- Frank Marth - Lt. Captain Richter
- Brian Keith - Lt. Jim Connor
- Brian Keith - Johnny
- Brian Keith - Idaho
- Brian Keith - Kip Caley
- Conrad Janis - Richard
- Conrad Janis - Tommy
- Conrad Janis - Sprad
- Berry Kroeger - Fulco
- Berry Kroeger - Lord Sannox
- John Forsythe - Wiltshire
- John Forsythe - David
- Patrick McVey - Harry Martin
- Patrick McVey - Whitey
- George Mathews - Police Detective
- Martin E. Brooks - Meros Leckow
- Martin E. Brooks - Harry Raymond
- Henry Hull - Sheriff
- Morton Stevens - Higgins
- Morton Stevens - Mr. O'Farrell
- Morton Stevens - Padre
- Dana Wynter - Patricia Richter
- Lee Marvin - Barrow
- E.G. Marshall - Abner Snopes
- E.G. Marshall - Eddie Hunt
- E.G. Marshall - Gavin Stevens
- Jeffrey Lynn - Don Ashley
- Jeffrey Lynn - John Bantreagh
- Robert Emhardt - Arnold Sachs
- Cara Williams - Babe
- Cara Williams - Myra Wilson
- Cara Williams - Betty Marshall
- Cara Williams - Nellie
- Barry Nelson - Turk Wilson
- Elliott Sullivan - Senator Burke
- Len Lesser - Man at Baseball Game (uncredited)
- Joe Mantell - Happy (uncredited)
- Ray Walston - Herbert the Hook
- Harold J. Stone - Eagle Moran
- Harold J. Stone - Max
- James Doohan - Peters
- Robert Mulligan
- Robert Stevens
- Halsted Welles
- Lord Dunsany
- Sig Herzig
- Ben Radin
- Max Simon Ehrlich
- Rod Serling
Susan Douglas interpreta a Zita Bradford en la serie.
Douglass Watson interpreta a Charlie en la serie.
Joshua Shelley hace el papel de Tony.
Felicia Montealegre interpreta a Elaine en la serie.
Lilli Palmer hace el papel de Julia.
Frankie Thomas interpreta a Art en la serie.
Bela Lugosi interpreta a Gen. Fortunato en la serie.
John McQuade interpreta a Roy Clade en la serie.
Peter Fernandez interpreta a Miguel en la serie.
Warren Stevens interpreta a Bernard Frank en la serie.
Capítulo disponible en las siguientes plataformas:
