Persons who pay a mere visit of curiosity to a prison, and are conducted by an official along rows of immaculately clean cells, where orderly prisoners are at work in perfect silence, cannot have the smallest conception of the extraordinary revelations in human nature, and in possibilities of human destiny, which are made known to those who are allowed to penetrate into the unveiled realities of the strange life that writhes within the impervious prison walls. Hidden there are elements of the deepest tragedy: abnormal facts, which raise the most intricate questions in moral responsibility and other psychological problems; true histories.