Arizona Express

David Keith (Harold Goodwin) is imprisoned and sentenced to death when he is falsely accused of murdering a man. His sister Katherine (Pauline Starke) sets out to prove her brother is innocent before he dies in the electric chair. David's life is further endangered when a prison riot ensues after a stone train is driven through the wall and several inmates escape. Katherine rushes to the governor with proof of her brother's innocence in hopes she can save David's life.