Two marine lieutenants battle a masked would-be world conqueror who uses electricity as a weapon.
Lee Powell
Lieutenant Tom Grayson
Bruce Bennett
Lieutenant Frank Corby
Eleanor Stewart
Janet Warfield
Montagu Love
General White
Hugh Sothern
Ben Warfield
Sam Flint
Colonel Grayson
Perry Ivins
Crenshaw
Forrest Taylor
Benson
John Picorri
Professor Gould
Carleton Young
Johnson, 'Aurora' Crewman
John Davidson
Lin Wing
Henry Otho
Sam Hedges, the Gardener
Reed Howes
Parker--Sub Crewman
Tom London
Henchman Wilson
Edmund Cobb
Henchman Ellis
Alan Gregg
Henchman Marco
Allen Matthews
Todd--Submarine Captain
Benson Fong
Gehorda Outlaw (uncredited)
Theodore Lorch
'Wing' Henchman (uncredited)
Victor Wong
Mikichan (uncredited)
Larry Steers
King (uncredited)
John Merton
Thompson (uncredited)
Lester Dorr
The Lightning (uncredited)
George DeNormand
Marine Guard at Burton Street (uncredited)
Frank Baker
General Snell (uncredited)
Jack Ingram
Dirigible Radioman (uncredited)
Monte Montague
Jacobs (uncredited)
Buddy Roosevelt
Lieutenant of the 'Pawnee' (uncredited)
Al Taylor
Bearded Sailor (uncredited)
Duke York
Sam (uncredited)
Stanley Price
The Lightning (voice) (uncredited)
George Magrill
Jamison (uncredited)
Harry Strang
Sgt. Bennett (uncredited)
Robert J. Wilke
Marine in Shanghai (uncredited)
Lloyd Whitlock
Dirigible Captain (uncredited)
Francis Sayles
Renault (uncredited)
Jack Hendricks
Marine (uncredited)
