Synopsis by Janiss Garza
Stage actor William Faversham makes one of his infrequent screen appearances in The Sixth Commandment. John Brandt (John Bohn), Robert Fields (Neil Hamilton), and Marian Calhoun (Kathleen Martyn) all grow up together. John grows up to be a preacher, but has nevertheless inherited the biggest fault of his father, David (Faversham) -- stubborn pride. Although he loves Marian, he keeps his distance because everyone assumes that she and Robert will marry. When the World War breaks out, both John and Robert go to France. John is blinded while helping Robert. When they return from the war, Robert neglects Marian for other women and she breaks up with him. John threatens Robert's life because of his callous treatment of the girl he has always loved. After John's blindness is cured, Robert is found dead and he becomes a murder suspect. Eventually he is found innocent and he and Marian are able to wed.