The Unwritten Law is a 1916 drama

Mrs. Wiggs, a loving mother whose husband has abandoned her, supports her many children and lives in hope of her husband's return.

The tragic, wandering journey of Mignon, the daughter of the nobleman Lothario and the Gypsy Musette, who is kidnapped by her mother's father, Giarno, after her mother's death. Mignon falls in love with the student Wilhelm, but he is infatuated with the actress Filina. After a fire and a mistaken engagement, Mignon leaves with Lothario, only to be recognized by an innkeeper who returns Lothario's lost memory. The film concludes with Lothario recovering his mind and Mignon and Wilhelm vowing to marry.

When beautiful Salomy Jane resists the romantic advances of a young ruffian, she is rescued by Jack Dart, who has his own additional reasons for tangling with the man. Jack fights the ruffian and kills him. He escapes with the law on his trail, for it is (wrongly) presumed that he is also the man who held up the stagecoach. Salomy Jane comes to his rescue when he is captured and about to be lynched.

The Count and Countess Bertrand are prominent in society. The Count is also a lieutenant. The throw a society circus and part of the entertainment is ring master and circus rider Alexander Ivanoff. But in reality Ivanoff is a spy, and with the aid of his wife he steals some documents from the Count which involve the mobilization of troops. When the papers turn up missing Bertrand is court martialed and sent to prison for a 12-year sentence.

A Native American woman is embittered after being abandoned by her white husband, Jimmy Dorr.

Homesteaders battle a cattle baron, who is trying to drive them off the lands they have settled on so his cattle will be able to graze on it.

In an early California settlement, Juanita, a dance hall queen of Castilian ancestry, knifes her lover, Jim Brandt, the dance hall owner, when she catches him embracing a new dancer.