Louis and August Siever, the twins sons of a German father and American mother, are traveling in Europe when war breaks out. August joins the Kaiser's army, but Louis, a supporter of the United States, is practically made a prisoner in Berlin for a year while he tries to prove his American citizenship. After a violent confrontation with Louis, August steals his brother's passport and leaves for New York with Gerda Anderson, a German spy.
Franklyn Farnum
as Capt. August Sieger / Louis Siever
Claire Du Brey
as Gerda Anderson
Rosemary Theby
as Shirley Wayne
Charles Hill Mailes
as Josiah Wayne
Sam De Grasse
as Mortimer Eddington
T.D. Crittenden
as Henry Waltham Steele
Fred Montague
as Capt. Bernard (as Frederick Montague)
