A team of two-fisted insurance investigators (one of whom disguises himself as The Masked Marvel) endeavor to discover and thwart the loathsome saboteur Sakima.
Tom Steele
as The Masked Marvel
Louise Currie
as Alice Hamilton
Johnny Arthur
as Mura Sakima
William Forrest
as Martin Crane
Anthony Warde
as 'Killer' Mace
Rod Bacon
as Jim Arnold
Richard Clarke
as Frank Jeffers
David Bacon
as Bob Barton
Bill Healy
as Terry Morton
Howard Hickman
as Warren Hamilton
Eddie Parker
as Meggs
Kenneth Harlan
as Gas Works Policeman
