Professor Duselberg
Grant Moore (1 episode)
Father Lavie (1 episode)
Gordon (4 episodes)
Peter Daum (1 episode)
Charles
Buddy Dieker (13 episodes)
Lionel
James Whitman (2 episodes)
Hobart Waxman
Orson Snyder (5 episodes)
Tom Soberin
Sir Crispin Crandall (1 episode)
Bob Fisher
William O. Douglas
Henry Belsen (1 episode)
Admiral Bruce Winnick (3 episodes)
Jim O'Connor
Dr. Blake
Claire's father (1 episode)
Rabbi Belsky
Arthur Gatoff (1 episode)
Thomas Grady Sr. (1 episode)
David Nemerov
Peter Redmond
Jonathan Turner (2 episodes)
Peter Hargrove
Chairman Wilson (3 episodes)
Senator Bell
Doug Rosselli
Bud's Editor
Thaddeus Rains
Agent Sterling
Phillip
Cardinal O'Fallon (1 episode)
Rick Anderson
Stanley Goldkiss
Judge Henry
Chairman Martin Dies
Leon Friedman
Quentin Travers (3 episodes)
Admiral Quinn
George Grierson
Narrator (voice) (1 episode)
General Clark Tully
The Jackal (1 episode)
Professor Speras
Dr Mercer
Leeds
Jerome Belasco (1 episode)
Black Harry
Gen. George C. Marshall
National Security Advisor James Cutter
Stanley Devon (1 episode)
Edward Manning (1 episode)
Aamin Marritza (1 episode)
Wilbur Bryant
Marvin Boyd
Keneally
Prosecuting Attorney (uncredited)
Neal Frazier (20 episodes)
Leo Watts
John Franco
Judge Wexler
Dr. Berrisford
Elmore Silk
Conrad Kroll
Robert Calder
Thomas Foran
Chief Harrigan
Bernstein
Jesse James
Eddie Cassidy
Billy 'Bowlegs' Baines
Deek Peasley (6 episodes)
Prosecutor Joseph T. Antonelli
Charles Conlin
Isaac Pratt
Arthur Pennington
Mark Bremer (1 episode)
General Dan Shomron
John Blackwood
Det. Carl Oller
Benny Hummel (1 episode)
John Lazia
Marty Heller
George 'Machine Gun' Kelly
Lieutenant Kastner
Hog Yancy
Gordon Rankey
Sheriff Jack Casey
Bert Podis (1 episode)
Zebulon Yandro
Parker Adderson
Leduc, A Doctor
Wyatt Earp
Joe Morgan