Evalyn Knapp
Pauline Hargrave
Craig Reynolds
Robert Ward (as Robert Allen)
James Durkin
Prof. Hargrave
John Davidson
Dr. Bashan
Sonny Ray
Willie Dodge
Frank Lackteen
Fang
Pat O'Malley
Tim Sullivan
William Desmond
Prof. Thompson
Josef Swickard
Haggins, Foreign Consul
William Worthington
American Consul
