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.
as The Masked Marvel
as Alice Hamilton
as Mura Sakima
as Martin Crane
as 'Killer' Mace
as Jim Arnold
as Frank Jeffers
as Bob Barton
as Terry Morton
as Warren Hamilton
as Meggs
as Gas Works Policeman
as Matthews
as Carl - Delivery-Truck Thug / Spike - Gas works saboteur / Kaler - Roof-top thug
as Tall Gas-Works Saboteur / Station-Wagon Thug / Super-X Warehouse Thug #1
as Newscaster
as Reporter #1
