Lois Fox, upon whose shoulder is branded a Chinese idiograph resembling the letters "A. Y.," is rescued from a gang of Chinese ruffians by Brice Ferris. His servant Ming, in attempting to steal from her finger a ring that bears a mysterious green seal, is killed, and soon afterward a stranger named Strang arrives, also in search of the girl. Despite Brice's efforts to protect her, Lois is abducted and taken to the headquarters of Lao Wing, the leader of a secret Chinese society known as the Tong.
Carmel Myers
as Lois Fox
Ashton Dearholt
as Brice Ferris
Frank Tokunaga
as Ming (as Frank Tokanaga)
Frank Deshon
as Lao Wing
Harry Carter
as Strang
Alfred Allen
as Chief of Police Struber
Betty Schade
as Sally
