Prof. Bradshaw
Chairman Hopkins
Refinery Executive (uncredited)
Cmdr. William H. Buracker (uncredited)
Well-Wisher at Indy Victory (uncredited)
Walter Quillen
Governor's Advisor
Police Lieutenant
Victor Delmar
Charlie Munro
Capt. Sid Walker
Husband - Circus Spectator
Larry Wade (uncredited)
Lt. Cassidy
Senator
The Fire Maker
Gary Droz
Cole Hotchkiss
Police Lt. Harris
Gen. Van Buskirk
Fred Horner
Air Force General
Pierre M. Morley
District Attorney Martin Proctor
Dr. Bradshaw
Jess Carter
Mr. Ross
Bert Rawley
Surgeon
Prof. Clifford Groves
Dr. William Wilson
Prime Minister Treeg
Paul Jackson / Fake John Harper
Capt. Burke
Jimmy - Aragon's Manager
Dr. Werner, Police Psychiatrist
Maj. Nathan Stark
Clark Sommers
Ace Crandall
Cincotta
Barry Morgan
Dixon
Jack Lacey
Chief Agent Charles Stuart
Stanley Brown
John Avery
West Coast Chief Agent J.G. Goff
Jay Wingate
Insp. 'Murph' Murphy
Richard Marshall
Don Mason
Dr. Richard Field
Floyd Durant
Judge Leonidas K. Carter
T.W. "Tom" O'Connor
Ronald MacArden
Col. Earl 'Red' Blaik
Roy Chesley
James O'Neil
Mr. Gordon
Chief Tom Blake
Bill Tyler
Chet King
Brad Thomas
Dick Meadows
Bertram Fallon
Dr. David Cochran
Captain Morgan
Marshal Jim Blake
Dudley Beecham
Bob Tate
Busboy (uncredited)
Chaplain aka 'Padre'
Lester Knight
Bill Cardigan
MacMahon
Dan Costello
Jared Whitney
Steve Randall
U.S. Marshal Frankie Wilson
Ned Kincaid
Engineer (uncredited)
Howard Benson
Maj. James Parker