Four flying G-Men protect America against enemy spies; one of the four assumes the identity of The Black Falcon, to befuddle the saboteurs even further.
as Hal Andrews / The Black Falcon
as Bart Davis
as John Cummings
as Babs McKay
as Billy McKay
as Charles Bronson
as W. S. Hamilton
as Marvin Brewster / The Professor
as Simmons
as Brewster's Secretary
as Hamilton's Secretary
as Korman
as Hall
as Williams
as Borden
as Dr. Alexander Craig
