During World War I, an illegitimate son of the German Kaiser, who had been raised in the US--and is a double for the Kaiser's son, the Crown Prince--is sent to Germany as a spy in order to kill both the Kaiser and his son.
Earl Schenck
Robert Busch / Crown Prince
Claire Whitney
Emily Busch
Percy Standing
Richard Busch
Louis Dean
The Kaiser
John Sunderland
Lieutenant Patin
Fred Hearn
Carl Von Stumpf