Bela Lugosi
Role: Dr. Alex Zorka / Dr. Zane
Robert Kent
Role: Capt. Bob West
Dorothy Arnold
Role: Jean Drew
Edwin Stanley
Role: Dr. Fred Mallory
Regis Toomey
Role: Lt. Jim Daly
Edward Van Sloan
Role: Jarvis
Dora Clement
Role: Ann Zorka
Anthony Averill
Role: Rankin
Hugh Huntley
Role: Perkins
Monte Vandergrift
Role: Al
Frank Mayo
Role: Train Engineer
Reed Howes
Role: Signalman
Hooper Atchley
Role: Experimental Lab Tech
Roy Barcroft
Role: AMI Agent Parker
Al Bridge
Role: White Rose Sailor
Lane Chandler
Role: Henchman with Rankin
Edmund Cobb
Role: Army Sergeant
Lee J. Cobb
Role: Road Crew Foreman (archive footage)
Eddie Dunn
Role: Policeman
Jerry Frank
Role: Henchman with Rankin
George Magrill
Role: Thug-Pilot / Schooner Crewman
Monte Montague
Role: Airplane Mechanic
Pat O'Malley
Role: AMI Chief
David Sharpe
Role: Schooner Sailor
Tom Steele
Role: Train Conductor / Radio Truck Driver
Forrest Taylor
Role: Black
Harry Wilson
Role: Schooner Crewman