Lex Sharp
Hank Crowell
Mr. Freeman (uncredited)
Mr. McCrea
Major - Tank Commander
Jared Martin
Joe Walters
Director
Cmdr. Jerome Burke
Fred Swan
Deputy Sheriff
Dave Hart
Jeremy Grant
Judge Horace Wheeler
Balenger
Mr. Harrison
Dr. David Walters
Harry Kellem
Dr. Walter Manning
Sheriff Howard Moss
H. T. Stewart
Captain Briskin
Detective
Capt. Jordan
Howard Wycoff
Sheriff
Henderson
Mr. Robinson
Curtis Atherton
Edwards
Josh Miller
Colonel Hiller
Col. Henroy
Joe - Director
Sheriff Pete Link
Webb White
Tom Mayberry
Paul Marron
Boyle
USCG Lt. Cmdr. Barney Adams
Lt. Boutaric
Herm Villiers
Thornton
Warden Hubbard
Brookson
Detective Ben Cooper
Jordan McClure
Alec Bruce
Lieutenant Kile
Lt. Pete Kile
Dr. Jay Milton
Ship's Captain
Walter Moody
Ed Hale
Charley Cousins
Tom Hadley
Prison Chaplain (uncredited)
Lt. Wolman
Paul Travers
Red Cummings
Lt. Col. Lou Marks
Monty Morgan
Thomas
1st Officer
Emmet Dolan
Coach O'Brien
Gen. Parker
Passenger Willis (AKA Rowan)
Detective Harding
Bart McCallin
Paul Carter
Sam Hewit
Self
Fenton Hardy
Sheriff Billings
Deputy Sheriff Jim Long
American General
Pete Bannion
Lieutenant Billings
Eddie
Col. Curtis Morley
Commander
Ed Beasley
Chief Controller
Henry Hart
Inspector Dougal
Crane
Reverend Edward Snow
Chief Agent Gunby
Police Officer
Rev. Bethany (uncredited)
Ambulance Doctor (Uncredited)
Code Expert (uncredited)
Ed Galt
Quintus
Reporter (uncredited)
Captain Grifton (uncredited)
Chaplain Willis (uncredited)
Cmdr. Willis - Chaplain (uncredited)
Newspaperman (uncredited)
Interrogator (uncredited)
Police Broadcaster (uncredited)
Sgt. Wilkerson (uncredited)
Doctor McPheeters
Second Policeman in Bank (uncredited)
Dr. Hughes
Major Horton
Police Detective (uncredited)
Gen. Tyler (uncredited)
Reporter (uncredited)
Colonel Henroy
Medic (uncredited)
Mr. Whitley (uncredited)
Det. Sgt. Sommers
Reporter (uncredited)
Sheriff of Largo
Eldredge
Russell (uncredited)
Colonel
Maj. Knowles
Maj. J.A. White (uncredited)
Wells Fargo Agent Clayton (uncredited)
Judge with Stopwatch
Captain (uncredited)
Referee Jamison
Feathergill
Monty Morgan
Prosecuting Attorney (uncredited)
Chief Mechanic
Bill Holleran
First FBI Man (uncredited)
Detective (uncredited)
First Sheriff
Phil Jackman
Police Officer
Sgt. Collins
Nelson
Fenton Hardy
Sgt. Maitland
Willie Long
Detective
Dave Moody
Fenton Hardy
Gardener
Jockey (uncredited)
Police Lt. Fred Garron
Detective Blake
Fraser
John W. Grant
Rancher