Although ostensibly the grand-son of the legendary hero, Clayton Moore's Ken Mason is little more than a cowboy in a black mask in this 12 chapter Republic serial. Mason, the head of the telegraph line work crew, assumes his ancestor's trade-mark mask (but not whip) in order to prevent a local czar (Roy Barcroft) from sabotaging the burgeoning telegraph line. Pamela Blake, a brunette starlet formerly known as Adele Pearce, played Mason's imperiled girlfriend, and the serial also benefitted from the usual competent work of Republic's great stunt-performers, including Dale van Sickel, Tom Steele, Eddie Parker, and Joe Yrigoyen.
Clayton Moore
as Ken Mason
Pamela Blake
as Rita White
Roy Barcroft
as Hank Kilgore
George J. Lewis
as Moccasin
Gene Roth
as George Crane
John Crawford
as Agent Mulvaney - Ch. 3, 4
I. Stanford Jolley
as Paul Hobson - Ch. 6, 7
Steve Clark
as Jonathan R. White - Ch. 1, 10
Steve Darrell
as Marshal Ben Simpson - Ch. 8
Dale Van Sickel
as Mike Hodge - Henchman
Tom Steele
as Brace
Alex Montoya
as Yellow Hawk - Henchman
