Paul Kelly
Lt. Dan Barton / The Black Commando
Rudolph Anders
Rudi Thysson
Clancy Cooper
Det. Sgt. Pat Flanagan
Gregory Gaye
Nazi Agent Feldon
Ludwig Donath
Nazi Prof. Metzger
Eddie Parker
Chief Henchman Berck
Wade Boteler
Police Chief Burns
Charles C. Wilson
Desk Sgt. Cullen
Alex Callam
Investigator Hogan
Robert Fiske
Investigator Ryan
Selmer Jackson
Maj. Henry Barton
Frank Shannon
Police Commissioner
Jack Rice
Fred, Jensen's Clerk
Joseph W. Girard
Col. Drake
Dick Botiller
Hans Steufel
Lucien Prival
U-499 Commander
Rose Plumer
Flower Woman Spy
Peter Leeds
Henchman Carl Hiecke
Kit Guard
Henchman Corrick
Lee Shumway
Police Dispatcher
Roy Brent
The Military Policeman
Stanley Brown
Police Lab Technician
Joseph Crehan
Police Chief Henry Burns
Eddie Dunn
Weather Bureau Man
Franklyn Farnum
Federal Agent
Eddie Kane
Coffee Shop Counterman
Frank LaRue
Weather Bureau Man
Tom London
Weather Bureau Guard
Frank McCarroll
Military Policeman
James Millican
Reporter Bill
Zon Murray
Military Policeman
Eddie Polo
Special Delivery Messenger
Charles Sullivan
Truck Driver