Lucien Prival
U-499 Commander
Ted Mapes
Nazi Agent
Edward Peil Sr.
Policeman
Gregory Gaye
Nazi Agent Feldon
Charles C. Wilson
Desk Sgt. Cullen
George Lynn
Chief Stover
Frank Shannon
Police Commissioner
Tom Steele
Federal Agent
Eddie Parker
Chief Henchman Berck
Chuck Hamilton
Henchman
Stanley Brown
Police Lab Technician
Jack Rice
Fred, Jensen's Clerk
Ludwig Donath
Nazi Prof. Metzger
Anne Nagel
Jean Ashley
Paul Kelly
Lt. Dan Barton / The Black Commando
Joseph Crehan
Police Chief Henry Burns
Clancy Cooper
Det. Sgt. Pat Flanagan
Eddie Kane
Coffee Shop Counterman
James Millican
Reporter Bill
Jacqueline Dalya
Linda
Zon Murray
Military Policeman
Selmer Jackson
Maj. Henry Barton
Joseph W. Girard
Col. Drake
Trevor Bardette
Jensen
Beal Wong
Quito
Peter Leeds
Henchman Carl Hiecke
Wally West
Bobby Stone
Newsboy
Kenne Duncan
Marvin
Wade Boteler
Police Chief Burns
Lee Phelps
Jailer
Jack Gardner
F. Wolper
Lester Dorr
Otto Stahl
Frank LaRue
Weather Bureau Man
John Elliott
Prof. Clyde
Charles Sullivan
Truck Driver
Harry Strang
Rudolph Anders
Rudi Thysson
Eddie Dunn
Eddie Gribbon
First Mate
Steve Clark
Tom London
Weather Bureau Guard
Dick Rush
Roy Brent
The Military Policeman
Warren Jackson
Ralph
Lee Shumway
Police Dispatcher
Rose Plumer
Flower Woman Spy
Robert Fiske
Investigator Ryan
Franklyn Farnum
Dick Botiller
Hans Steufel
Frank McCarroll
Alex Callam
Investigator Hogan
Gus Glassmire
Mr. Stevens
Knox Manning
Narrator
Joe Caits
Messenger
Jack Hendricks
Kit Guard
Henchman Corrick
Sigfrid Tor
Lt. Kurtz
Bert Young
Eddie Polo
Special Delivery Messenger
Ken Carpenter
Newscaster
Henry Lysing
Code Lessons
Eddie Woods
Henchman Kurt