"Reporter vs. German spies and their new metal."
Warren Hull
as Bill MacGregor
Kay Linaker
as Sonia Manning
Wilhelm von Brincken
as Professor Werner
George Cleveland
as John MacGregor
Fern Emmett
as Aunt Mary
Edward Keane
as Newspaper Editor
Willy Castello
as Eric Bowman
John Sheehan
as Marden
Herbert Corthell
as Pete
Vince Rush
as Gruen
Howard Bretherton
Director
Fred Scheld
Associate Producer
T.R. Williams
Producer
W.B. Eason
Assistant Director
Karl Zint
Sound Engineer
Edward J. Kay
Music Director
Harry Neumann
Director of Photography
Robert Golden
Editor
Russell F. Schoengarth
Charles Williams
Writer
Marion Orth
