Robert Cannon / Bob Cannon (63 episodes, 1951-1953)
Christopher Storm / Christoffer Storm (40 episodes, 1954-1955)
Michael Powers (37 episodes, 1953-1954)
Tony Forrest / Tony / Martin / Michael Forrest (20 episodes, 1951-1955)
Helen Davis (16 episodes, 1951-1953)
Dodo / Rudolph (13 episodes, 1953-1955)
Starky / Building Superintendent / Man warning gamblers / Secretary to Tarsus / neighbor of Lombardo (10 episodes, 1953-1955)
Boumann / Brodin / Castro / Collard / Delacruz / Harry / Inspector / Minister / Moretto / Turec (10 episodes, 1952-1955)
Inspector / Blane / Captain Maurii / Curven / George / Marble / Toto (9 episodes, 1952-1955)
Bahnhof / Cloche / Hotel Manager / Hönig / Kopeck / Panda / Reghin / Schwindt / Strandman (9 episodes, 1951-1955)
A Man / Ferris / Guide / Kurt / Man / Max Stauffer / Sailor / Streeter (6 episodes, 1953-1955)
Patricia Bennett (7 episodes, 1953-1954)
Damon / DeLisle / Gruebl / Hagel / Marcel / Unger / Wald (7 episodes, 1951-1955)
Inspector / Anton / Detective / Feo / Speaker / Storm (7 episodes, 1952-1955)
Burt / Carl / Gerard Brenner / Inspector / Karl / Moro (7 episodes, 1954-1955)
Crystal / Ilsa / Joanna Vandeer / Karin / The Model (7 episodes, 1954-1955)
Anna Chopak / Addy / Eva / Judy Keller / Marta Müller / Mrs. Tanner (7 episodes, 1953-1955)
Eva / Lisa / Margo / Nicole / Nita / Tina (6 episodes, 1952-1955)
Felix / Fleming / Lindgaard / Monsieur Roux / Salesman / Sergius (6 episodes, 1951-1955)
Bremen / Chernik / Hoffman / Inspector / Lork / Riker (6 episodes, 1951-1955)
Barbara Vale / Nina Richter / Hilda / Nurse (6 episodes, 1953-1955)
Dorfmann / Inspector / Lautrec / Leon / Zapocki (6 episodes, 1952-1955)
Andrei / Clerk / Karl / Kaspar Chopak / Philip / Policeman (4 episodes, 1953-1954)
Inspector / Elbe / Hodge / Major (5 episodes, 1953-1955)
Fontaine / Inspector / Rico / Steffo / Vester (5 episodes, 1953-1954)
Andersen / Anna / Max / Policeman / Vanderson (5 episodes, 1953-1954)
Steve Godfrey / Doctor / Steve Godfrey - Reporter (5 episodes, 1951-1954)
Bissman / George Hans / Killer / Tarsus / Ulrich (5 episodes, 1951-1954)
Count / Larman / Nicoli / Nile (5 episodes, 1953-1954)
Carlos / Clerk / Debeq / Purser / Zorro (5 episodes, 1951-1953)
Hilda / Lotte / Nina / Woman (4 episodes, 1953-1955)
Achille / André Sokoloff / Panaro / Sokoloff (4 episodes, 1952-1953)
Inspector / Kiley / Raoul / Vigness (4 episodes, 1954)
Mansell / Minor / Paul / Victor (4 episodes, 1951-1954)
Chester / Gordean / Schroeder / Wormser (4 episodes, 1953-1954)
Announcer / Bruno / Kogel / Major Domo (4 episodes, 1952-1954)
Belzer / Courier / Patewani / Waiter (4 episodes, 1952-1953)
A Man / Fisherman / Speenard (2 episodes, 1953-1955)
Gerda Martinez / Lisa / Mona (3 episodes, 1952-1954)
Inspector / Leo Prager / Van Roon (3 episodes, 1952-1954)
Bartel / Gilbert Torpe / Jens (3 episodes, 1951-1955)
Drexel / Kravitz / Paul Bundy (3 episodes, 1952-1954)
Eridatti / Purse Snatcher / Socrates (2 episodes, 1953-1955)
Dorstein / Valdemar / Zatoff (3 episodes, 1953)
Call Girl / Janine / Lorry (2 episodes, 1953-1954)
Carl Weimer / Passenger / Vallesque (3 episodes, 1953)
Ballard / Chief of Police / Conrad (3 episodes, 1952-1953)
Ernest / Fire Chief / Inspector Vestey (3 episodes, 1952-1954)
Kempi / Lombardo / Myrik (3 episodes, 1953-1954)
Harry Sarnow / Singer / Sundane (3 episodes, 1951-1953)
Jan Cullough / Romeo / Sievert (3 episodes, 1954-1955)
Dorland / Hans / Zimmer (3 episodes, 1952-1955)
Lauritz / Prince Stephen / Zinner (3 episodes, 1954-1955)
Brita / Celia Eckland / Elsa (3 episodes, 1954)
Mrs. Eckhart / Operator (3 episodes, 1954-1955)
Inspector / Minister / Warden (3 episodes, 1951-1955)
Akmet (3 episodes, 1952-1953)
Arthur / Inspector (2 episodes, 1952-1953)
Miss Steiner / Model (2 episodes, 1955)
Judge / Utrecht (2 episodes, 1952-1953)
Police Chief / Tomberg (2 episodes, 1953-1954)
Bellboy / Hotel Clerk (2 episodes, 1951-1954)
Herzog / Mr. Weimer (2 episodes, 1953-1954)
Gantner / Walter (2 episodes, 1952-1954)
Bartender / Captain (2 episodes, 1951-1954)
Karzag / Steiner (2 episodes, 1952)
Annette / Underground Leader (2 episodes, 1953-1954)
Teddy (2 episodes, 1955)
Irene (2 episodes, 1952)
Miss Ramanekh / Odette (2 episodes, 1953)
Butler / Head Waiter (2 episodes, 1955)
Fouget (2 episodes, 1952)
Courvelle (2 episodes, 1953-1954)
Mace / The Convict (2 episodes, 1955)
Dora / Waitress (2 episodes, 1952-1953)
Methot (2 episodes, 1952)
Grenet (2 episodes, 1952)
Elsa / Mai (2 episodes, 1951-1954)
Brommer (2 episodes, 1951-1954)
Dave (2 episodes, 1951-1953)
Essen / Renke (2 episodes, 1952-1953)
Scholten / Warden (2 episodes, 1952)
Nanette Colbert (2 episodes, 1953-1954)
Fergazi / Tomacho (2 episodes, 1953-1954)
Blonde / Mrs. Zimmerman (2 episodes, 1954-1955)
Harold Kirkner / Inspector Gerard (2 episodes, 1954-1955)
Mrs. Lombardo (2 episodes, 1954)
Claudine / The Girl (2 episodes, 1955)
Vessau (1 episode, 1952)
Carien (1 episode, 1952)
Derek Savage (1 episode, 1953)
Mrs. Bartok (1 episode, 1954)
Nancy (1 episode, 1954)
Jurgen (1 episode, 1954)
Shana (1 episode, 1955)
Laurent (1 episode, 1951)
Hans (1 episode, 1952)
Grenier (1 episode, 1952)
Durban (1 episode, 1952)
Posen (1 episode, 1952)
Kulenberg (1 episode, 1952)
Russ (1 episode, 1953)
Johann (1 episode, 1953)
Marie (1 episode, 1953)
Old Man (1 episode, 1954)
Helene Anderson (1 episode, 1955)
Grete (1 episode, 1955)
Fenner (1 episode, 1955)
Mrs. Schiller (1 episode, 1955)
SALON-keeper (1 episode, 1955)
Girl (1 episode, 1951)
Francois (1 episode, 1951)
Polev (1 episode, 1951)
Hotel Clerk (1 episode, 1951)
Walter (1 episode, 1952)
Otto (1 episode, 1952)
Kester (1 episode, 1952)
Helly Bramm (1 episode, 1953)
Bruno (1 episode, 1953)
Nora Phipps (1 episode, 1955)
Nestor (1 episode, 1955)
Woman (1 episode, 1951)
Conductor (1 episode, 1951)
Sapolski (1 episode, 1952)
Nina (1 episode, 1952)
Midget (1 episode, 1952)
Courier (1 episode, 1952)
Marietje (1 episode, 1952)
Butler (1 episode, 1953)
Guard (1 episode, 1953)
Max (1 episode, 1953)
Chambermaid (1 episode, 1953)
Commander (1 episode, 1954)
Lise (1 episode, 1954)
Colonel (1 episode, 1954)
Custom Man (1 episode, 1955)
Receptionist (1 episode, 1951)
Monsieur Claire (1 episode, 1951)
Girl (1 episode, 1952)
Headwaiter (1 episode, 1953)
Inspector (1 episode, 1953)
Croupier (1 episode, 1953)
Boy (1 episode, 1954)
Nurse (1 episode, 1955)
Bartender (1 episode, 1951)
Rudolph (1 episode, 1952)
Pepe (1 episode, 1954)
Doctor (1 episode, 1951)
Leiter Kessel (1 episode, 1951)
Docteur (1 episode, 1951)
Otto (1 episode, 1951)
Claire (1 episode, 1951)
Dietrich (1 episode, 1951)
Meyer (1 episode, 1951)
Karl Heller (1 episode, 1951)
Steward (1 episode, 1951)
Ferenc (1 episode, 1952)
Tourraine (1 episode, 1952)
Kestler (1 episode, 1952)
Stewardess (1 episode, 1952)
Man (1 episode, 1952)
Short strong man (1 episode, 1953)
Cab Driver (1 episode, 1953)
Rahib (1 episode, 1953)
Miss Rymer (1 episode, 1953)
Girl (1 episode, 1954)
Julio (1 episode, 1954)
Tendler (1 episode, 1954)
Henri (1 episode, 1954)
Tom (1 episode, 1954)
(1 episode, 1954)
Imposter (1 episode, 1954)
Sargent (1 episode, 1954)
Johnny (1 episode, 1954)
Lenore (1 episode, 1954)
Ponti (1 episode, 1954)
Anna (1 episode, 1954)
Karl (1 episode, 1954)
Penelope (1 episode, 1955)
The School Teacher (1 episode, 1955)
(1 episode, 1955)
Tina (1 episode, 1955)
Kerner (1 episode, 1955)
The Girl (1 episode, 1955)
Pianist (1 episode, 1955)
Fashion Model (uncredited) (1 episode, 1953)
Woman in Bar (uncredited) (1 episode, 1955)
Announcer / Ballantine pitchman (uncredited) (1 episode, 1955)