The President (archive footage)
Lawrence Preston
Lawrence Preston
The Senate Chairman
Walter Sullivan
John Mitchell
Professor Taw
Gideon Welles (voice)
George Gordon
Joe Meadows
Commdr. Smith
Steven Pike
Stanley 'Stan' Kubacki
Judge Cropper
Harold Sloan
Senator Sam Hastings
Witherspoon
Mr. Baker
The Ambassador
Narrator
Upson Pratt (segment "They're Creeping Up On You")
John Foster Dulles
Dr. Ward Frazier
The President
Roy Snyder
Harry Kilcoyne
Arthur
Dr. Mendel
Sen. Joseph Paine
Bishop Francis Paul Logan
Joe Finnegan
James Wright
W. O. Gant
Dr. Cazalis
Daniel Lawrence
Senator Stowe
Lt. Colonel Rufus S. Bratton
Brig. Gen. Shinner
Intelligence Officer Powell (uncredited)
Coley Jones
Val Rogers
Colonel Pakenham
Solness
Winston Conway
District Attorney Harold Horn
Harold Rhinelander
Gov. William Claiborne
Sam Dunstock
Juror 4
Walter
Oscar
Solange
Lt. Jennings
Dr. David Sigman
Ignatius
Horace (The Governor)
Police Lt. Carl Eckstrom
Lt. Comdr. Challee
Father Francis Dolan
Military Police Jeep Driver (uncredited)
Rayska (uncredited)
Pompano, the dance caller
