Errol Flynn as Corporal Steve Wagner

Julie Bishop as Laura McBain

Helmut Dantine as Colonel Hugo von Keller

Gene Lockhart as Ernst Willis

John Ridgely as Jim Austen

Tom Tully as Inspector Barnett

Alec Craig as Angus McBain

Rose Higgins as Rose Dagor (uncredited)

Bernard Nedell as Tom Dagor

Tom Drake as Heinzmann (uncredited)

Richard Allord as Jochim Preisser (uncredited)

Warren Douglas as Sergeant (scenes deleted)

Monte Blue as Jean

John Alvin as Orderly (uncredited)

Robert Ashley as German Ski Trooper (uncredited)

Glen Cavender as Workman (uncredited)

Ken Christy as Winnipeg Police Desk Sergeant (uncredited)

Wallis Clark as Judge (uncredited)

Robert Dayne as German Ski Trooper (uncredited)

Jim Dugan as Mountie (uncredited)

Alf Engen as Nazi Soldier (uncredited)

Ben Erway as Immigration Officer (uncredited)

Tom Fadden as Hobby (uncredited)

Jim Farley as Turnkey (uncredited)

John Forsythe as Corporal (uncredited)

Arno Frey as Submarine Captain (uncredited)

Bob Gary as Nazi Soldier (uncredited)

Rudy Germane as German Agent (uncredited)

Arthur Gould-Porter as Little Man on Train (uncredited)

Chuck Hamilton as Bailiff at Winnipeg Trial (uncredited)

Carl Harbaugh as Radio Operator (uncredited)

Joe Haworth as Mountie (uncredited)

George Herrera as Mountie (uncredited)

Joe Herrera as Indian Guide (uncredited)

Herbert Heywood as Farmer (uncredited)

Russell Hicks as Chief Inspector (uncredited)

Robert Hutton as Internment Camp Guard (uncredited)

Paul Irving as Lawyer (uncredited)

Charles Judels as Nick - Barber (uncredited)

Fred Kelsey as Train Conductor (uncredited)

Bill Kennedy as Mountie (uncredited)

Jack Kenny as Guest at Inn (uncredited)

Robert Kent as Soldier (uncredited)

Donald Kerr as Reporter at Winnipeg (uncredited)

Milton Kibbee as Hotel Clerk (uncredited)

Guy Kingsford as Campbell - Mountie at Post (uncredited)

George Kirby as Hotel Clerk (uncredited)

John Lannon Jr. as German Ski Trooper (uncredited)

George Lynn as Johnson - Mountie (uncredited)

Lou Marcelle as Opening Off-Screen Narrator (voice) (uncredited)

Charles Marsh as Man in Camel Hair Coat (uncredited)

Clay Martin as Nazi Soldier (uncredited)

Lester Matthews as Colonel (uncredited)

James Millican as Army Driver (uncredited)

Pat Moriarity as Recruiting Sergeant (uncredited)

Jack Mower as Police Officer in Courtroom (uncredited)

Martin Noble as German Cook (uncredited)

Frank O'Connor as Train Station Passenger (uncredited)

William Osten as German Sergeant (uncredited)

Jack Perrin as Train Conductor (uncredited)

Hugh Prosser as Corporal (uncredited)

John Royce as German Aviator (uncredited)

Eddie Searles as German Ski Trooper (uncredited)

George Sherwood as Ticket Seller (uncredited)

Jay Silverheels as Indian (uncredited)

Ray Spiker as Passerby (uncredited)

Cliff Storey as German Ski Trooper (uncredited)

Sam Waagenaar as German Assistant Cook (uncredited)

Glen Walters as Guest at Inn (uncredited)

Leo White as Train Passenger (uncredited)

Tom Wilson as Guest at Inn (uncredited)