Walter Sullivan
Lt. Comdr. Challee
Intelligence Officer Powell (uncredited)
John Mitchell
Gov. William Claiborne
Sam Dunstock
Colonel Rufus S. Bratton
Art
Police Lt. Carl Eckstrom
Val Rogers
The President
District Attorney Harold Horn
Horace (The Governor)
Steven Pike
Winston Conway
Arthur
Brig. Gen. Shinner
George Gordon
Dr. David Sigman
Upson Pratt (segment "They're Creeping Up On You")
Witherspoon
Senator Sam Hastings
James Wright
Lt. Jennings
Colonel Pakenham
Harold Rhinelander
Military Police Jeep Driver (uncredited)
Roy Snyder
Daniel Lawrence
Commdr. Smith
Dr. Mendel
President Harry S. Truman
Coley Jones
Joe Meadows
Jerry
Walter
Father Francis Dolan
Lawrence Preston
Self - Host
God
Sheridan Hugotor
Judge Cropper
Harry Kilcoyne
Jed Finnegan
John Foster Dulles
Rayska (uncredited)
Professor Taw
Lawrence Preston
Narrator
Dr. Ward Frazier
Beria
Stanley 'Stan' Kubacki
Harold Sloan
Mr. Baker
Solange
Narrator
Sen. Joseph Paine
Self - Narrator (voice)
Federalist Spokesman
The Ambassador
Ignatius
Pompano, the dance caller
Oscar
Solness
The President
Reader (voice)
Bishop Francis Paul Logan
Juror 4
The Senate Chairman
Senator Stowe
W. O. Gant
Narrator 1
Gideon Welles (voice)
Dr. Cazalis
Narrator
Self - Host
Self - Host
(archival footage)
Narrator
Henri Denault
Stanley Rappaport
Charlie Pitt
Senator Virgil Thomas Blake
Jared Soames (segment "Death in the Family")
Jack
Curt Cober
Grover Cleveland
Arthur Thurmond
Ben Foley
Father
Lawrence Preston
Alf Rylett
Arthur Ingram
Eddie Hunt
Father
Self
Gen. John Tanner
Franklin Bradshaw
Dr. David Craig
O'Hoolihan
Joseph P. Kennedy
Herman Magnus
Ev Hillman
General John Tanner
Self - Mystery Guest
Ronald J. Grimes
Harry Mork
Mr. Baker
Everett Metcalf
George Banks
Aaron Kinney
Dr. Shratt
Oscar
President Ulysses S. Grant
Narrator
Mr. Lazarus
Judge Elmo J. Carver
Abner Snopes
Gavin Stevens
Horace Greeley
Hiram Holliday
Barnwell Rhett
N. Y. Times editor
Jerry
Dennis Leighton
Self
Self - Guest
Professor Taw
Prof. Leon Walker
Paul Steppe
Actor
Merchant
Rip Van Winkle