Evalyn Knapp

Pauline Hargrave

Craig Reynolds

Robert Ward (as Robert Allen)

James Durkin

Prof. Hargrave

John Davidson

Dr. Bashan

Frank Lackteen

Fang

Pat O'Malley

Tim Sullivan

William Desmond

Prof. Thompson

Josef Swickard

Haggins, Foreign Consul

William Worthington

American Consul

Adolph Milar

Capt. Drake

Don Brodie

Airline Official

Wong Chung

Chinese Man

Al Kikume

Bashan's Attendant

Ethan Laidlaw

Fake Museum Watchman

Tom London

Soldier at American Consulate

Monte Montague

Police Guard

Jack Mower

Airport Inspector

Constantine Romanoff

Tyrone

Churchill Ross

American Tourist

Philip Sleeman

Henchman