Lucy Hegan, the proprietor of a settlement house for the poor, is engaged to Hugh Gordon, the head of a large pharmaceutical and chemical firm who, unknown to Lucy, is also the ringleader of a powerful drug and white slave operation in the Chinese quarter.

Robert McKim
Hugh Gordon

Claire Adams
Lucy Hegan

Roy Stewart
Allan Martin
Audrey Chapman
Mary Holmes

George Webb
Monk Mullen

Betty Brice
Maggie O'Brien

Edward Peil Sr.
Ling Choo Fong

Harvey Clark
Chow Chin

Harry Tenbrook
Chink Murphy

Stanton Heck
George Conley
Zack Williams
Wesley Shiloh Mainwaring

George Hernandez
James Hegan

Gertrude Claire
Mrs. Mullen
Laddie Earle
Jimmy Mullen