A famous scientist and his beautiful daughter travel to Indochina to find an ivory disc that has the formula for a deadly gas engraved on it. An evil doctor and his gang are also looking for it.
Pauline Hargrave
Evalyn Knapp
Robert Ward (as Robert Allen)
Craig Reynolds
Prof. Hargrave
James Durkin
Dr. Bashan
John Davidson
Willie Dodge
Sonny Ray
Fang
Frank Lackteen
Tim Sullivan
Pat O'Malley
Prof. Thompson
William Desmond
Haggins, Foreign Consul
Josef Swickard
American Consul
William Worthington
Capt. Drake
Adolph Milar
Foo Chow, Bashan's Henchman
James Wang
Airline Official
Don Brodie
Chinese Man
Wong Chung
New York Henchman
George DeNormand
Woman Accomplice in Singapore
Beulah Hutton
Bashan's Attendant
Al Kikume
Fake Museum Watchman
Ethan Laidlaw
Soldier at American Consulate
Tom London
Guide-Henchman
Merrill McCormick
Police Guard
Monte Montague
Airport Inspector
Jack Mower
Tyrone
Constantine Romanoff
American Tourist
Churchill Ross
Cop at Fire Scene
Dick Rush
Henchman
Philip Sleeman
Lee
Charles Stevens
American Tourist
Emma Tansey
Stewardess
Ruth Warren