Cast (55)
Eduardo CiannelliDoctor Satan
Robert WilcoxBob Wayne / Copperhead
William NewellSpeed Martin
C. Montague ShawProf. Thomas Scott
Ella NealLois ScottDorothy HerbertAlice Brent
Charles TrowbridgeGov. Bronson
Jack MulhallPolice Chief Rand
Edwin StanleyCol. Bevans
Walter McGrailStoner
Joe McGuinnGort
Bud GearyHallettPaul MarionCorbay
Archie TwitchellRoss
Lynton BrentScarlettKen TerrellCorwin
Al TaylorJoeGeorge AllenHenchman-Driver Spike
John BagniGray, Pick-up Thug
Frank BrownleePanamint Pete
James BushCo-Pilot
Yakima CanuttSailor at Winch
Virginia CarrollNurse
Ed CassidyBarton
Davison ClarkPolice Lieutenant
Tristram CoffinWells - Governor's SecretaryFrank ConklinStation Master BurnsFred CriswellOfficer
Eddie DewGas Station Attendant
Frank EllisPlant HenchmanJames FawcettAlSam GarrettRoperDuke GreenDuke - Mine ThugAlan GreggRed - Mine Thug
Kenneth HarlanCapt. Lathrop
Charles HutchisonProprietorJerry JeromeHouse HeavyPatrick KellyPlant Henchman
Marten LamontSteve - PilotBert LeBaronHenchman Fallon
Jack O'SheaHouse Heavy
Eddie ParkerChuck - Lead Truck Thug
Hal PriceP&G Warehouse Mgr.Ernest SarracinoHenchman-Guard
Cy SchindellJake - Biplane PilotWilliam StahlDetective Brock
Ted StanhopeWarehouse Watchman
Tom SteeleTruck Henchman
Harry StrangPolice Officer DavisDuke TaylorWatkins - Fire Escape ThugRobert WayneDetective Perry
Wally WestPalmer - Thug
Lloyd WhitlockProf. WilliamsBill WilkusTruck HenchmanBud WolfeSailor at Cable