Officer John Brown is after the outlaw known as the Night Rider. Posing as Jim Blake he takes a job on the Rogers ranch. He finds the secret passage from the Rogers mine to the Rogers house used by the Night Rider and also a note written by the Night Rider to his henchmen. Practicing his hand writing, he has a plan to trap him.

Allen Spargo, a mining engineer who is betrothed to Theresa Kane, goes West to make his fortune and is seriously injured in an accident. Kate Leonard, who falls in love with him while nursing him to recovery, jealously intercepts his fiancée's letters and then writes Theresa that Allen is dead.

A Yankee Princess is a 1919 American silent comedy-drama film produced and distributed by the Vitagraph Company of America. It was directed by David Smith and stars Bessie Love, who also wrote the screenplay. It is a lost film.