The Unwritten Law is a 1916 drama

When her mother elopes with a lover and her father dies cursing the name of God, Domini Enfilden attempts to forget her pain in Beni Mora, an oasis in the Sahara. At the desert hotel, she meets and falls in love with Boris Androvsky, a tormented man of mystery. Abruptly announcing his departure one day, Boris bids farewell to Domini in the Garden of Allah

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.

Dr. Henry Jekyll experiments with scientific means of revealing the hidden, dark side of man and releases a murderer from within himself.

Stephen Brice, a young lawyer in Civil War-era St. Louis, falls in love with Virginia Carvel, the daughter of his benefactor. But she is loyal to the South and Brice is committed to Lincoln's cause. In the course of the war, their convictions separate them, and Virginia becomes engaged to her cousin Clarence Colfax, a Confederate officer. Brice becomes an officer under General Sherman, and eventually finds himself faced with the captured Colfax, facing execution for spying. Brice must decide whether or not to intercede in his rival's behalf.