"Prior to the United States' involvement in World War II, the masked vigilante Spy Smasher fights Nazi agents operating within the US, led by the treacherous sabotage leader codenamed The Mask."
Kane Richmond
as Alan Armstrong / Jack Armstrong
Marguerite Chapman
as Eve Corby
Sam Flint
as Admiral Corby
Hans Schumm
as The Mask
Tristram Coffin
as Drake
Franco Corsaro
as Captain Pierre Durand
Hans von Morhart
as Captain Gerhardt
Georges Renavent
as Governor LeComte
Rudolph Anders
as Col. Von Kohr
Henry Zynda
as Ritter Lazar
Paul Bryar
as Lawlor
Tom London
as Crane
Richard Bond
as Hayes
Crane Whitley
as Hauser
John James
as Steve
Dudley Dickerson
as Train Porter (uncredited)
William Forrest
as Thornton (uncredited)
Yakima Canutt
as Armored Car Driver (uncredited)
Arvon Dale
William Witney
Director
Ronald Davidson
Screenplay
Norman S. Hall
William Lively
Joseph O'Donnell
Joseph F. Poland
William J. O'Sullivan
Producer
Tony Martinelli
Editor
Edward Todd
Bob Mark
Makeup Artist
Daniel J. Bloomberg
Sound Recordist
Charles L. Lootens
Howard Lydecker
Special Effects
Theodore Lydecker
Stunts
Tommy Coats
John Daheim
James Fawcett
Duke Green
Jerry Jerome
Bert LeBaron
Carey Loftin
Charles Regan
Loren Riebe
Buddy Roosevelt
David Sharpe
Cy Slocum
Tom Steele
Duke Taylor
Sid Troy
Bill Wilkens
Bud Wolfe
Reggie Lanning
Director of Photography
Mort Glickman
Original Music Composer
Ken Terrell