Doctor Satan

Eduardo Ciannelli

Acting

Bob Wayne / Copperhead

Robert Wilcox

Acting

Speed Martin

William Newell

Acting

Prof. Thomas Scott

C. Montague Shaw

Acting

Lois Scott

Ella Neal

Acting

Alice Brent

Dorothy Herbert

Acting

Gov. Bronson

Charles Trowbridge

Acting

Police Chief Rand

Jack Mulhall

Acting

Col. Bevans

Edwin Stanley

Acting

Stoner

Walter McGrail

Acting

Gort

Joe McGuinn

Acting

Hallett

Bud Geary

Acting

Corbay

Paul Marion

Acting

Ross

Archie Twitchell

Acting

Scarlett

Lynton Brent

Acting

Corwin

Ken Terrell

Acting

Joe

Al Taylor

Acting

Henchman-Driver Spike

George Allen

Acting

Gray, Pick-up Thug

John Bagni

Acting

Panamint Pete

Frank Brownlee

Acting

Co-Pilot

James Bush

Acting

Sailor at Winch

Yakima Canutt

Acting

Nurse

Virginia Carroll

Acting

Barton

Ed Cassidy

Acting

Police Lieutenant

Davison Clark

Acting

Wells - Governor's Secretary

Tristram Coffin

Acting

Station Master Burns

Frank Conklin

Acting

Officer

Fred Criswell

Acting

Gas Station Attendant

Eddie Dew

Acting

Plant Henchman

Frank Ellis

Acting

Al

James Fawcett

Acting

Roper

Sam Garrett

Acting

Duke - Mine Thug

Duke Green

Acting

Red - Mine Thug

Alan Gregg

Acting

Capt. Lathrop

Kenneth Harlan

Acting

Proprietor

Charles Hutchison

Directing

House Heavy

Jerry Jerome

Acting

Plant Henchman

Patrick Kelly

Acting

Steve - Pilot

Marten Lamont

Acting

Henchman Fallon

Bert LeBaron

Acting

House Heavy

Jack O'Shea

Acting

Chuck - Lead Truck Thug

Eddie Parker

Acting

P&G Warehouse Mgr.

Hal Price

Acting

Henchman-Guard

Ernest Sarracino

Acting

Jake - Biplane Pilot

Cy Schindell

Acting

Detective Brock

William Stahl

Acting

Warehouse Watchman

Ted Stanhope

Acting

Truck Henchman

Tom Steele

Acting

Police Officer Davis

Harry Strang

Acting

Watkins - Fire Escape Thug

Duke Taylor

Crew

Detective Perry

Robert Wayne

Acting

Palmer - Thug

Wally West

Acting

Prof. Williams

Lloyd Whitlock

Acting

Truck Henchman

Bill Wilkus

Acting

Sailor at Cable

Bud Wolfe

Acting