Warren Hull
Mandrake the Magician
Acting
Doris Weston
Betty Houston
Acting
Al Kikume
Lothar
Acting
Rex Downing
Tommy Houston
Acting
Edward Earle
Dr. Andre Bennett
Acting
Forbes Murray
Professor Houston
Acting
Kenneth MacDonald
James Webster
Acting
Don Beddoe
Frank Raymond
Acting
Dick Curtis
Dorgan
Acting
John Tyrrell
Dirk
Acting
Stanley Brown
Green
Acting
Beatrice Curtis
Rest Home Nurse
Acting
Robert Sterling
Henchman
Acting
Sam Ash
George Regan
Acting
Lester Dorr
Gray
Acting
Ernie Adams
Brown
Acting
Eddie Fetherston
Rest Home Henchman
Acting
Eddie Foster
Ed
Acting
Knox Manning
Narrator
Acting
Ernie Alexander
Cabbie
Acting
Harry Bernard
Construction Camp Watchman
Acting
Stanley Blystone
Henchman CX12
Acting
Buel Bryant
Rest Home & Ironworks Henchman
Acting
Budd Buster
Construction Camp Henchman
Acting
George Chesebro
Baker
Acting
Charles Dorety
Mill River Inn Henchman
Acting
Jerry Frank
Harper Drive Henchman
Acting
Kit Guard
Powerhouse Henchman
Acting
Frank Hagney
Harris
Acting
Chuck Hamilton
Bank Henchman
Acting
Eddie Hart
Williams
Acting
Oscar 'Dutch' Hendrian
Powerhouse Henchman
Acting
Jerry Jerome
Ward
Acting
Eddie Laughton
Kidnapping Henchman
Acting
Tom London
Mill River Inn Henchman
Acting
Stanley Mack
Roadster Henchman
Acting
Pat McKee
Dam Henchman
Acting
Charles McMurphy
Construction Foreman
Acting
Frank Mills
Gas Station Hitman
Acting
Art Mix
Ironworks Henchman
Acting
Eddie Parker
Henchman
Acting
Ralph Peters
Mohawk Steward-Henchman
Acting
Rose Plumer
Ship Passenger
Acting
Cyril Ring
Magic Mart Henchman
Acting
Cy Schindell
Bank Henchman
Acting
Charles Sherlock
Ship Henchman
Acting
Reginald Simpson
Parsons
Acting
Tom Steele
Powerhouse Henchman
Acting
Charles Sullivan
Henchman-Driver
Acting
Harry Tenbrook
Streeter
Acting
George Turner
Apartment-Raider
Acting
Frank Wayne
Henchman
Acting
Blackie Whiteford
Construction Camp Henchman
Acting
Bud Wolfe
Tower Henchman
Acting
Bert Young
Rest Home Henchman
Acting
Steve Clark
Henchman (uncredited)
Acting