Austin Hall 
The Blind Spot [EPUB ebook] 

Perhaps it were just as well to start at the beginning. A mere matter of news.
All the world at the time knew the story; but for the benefit of those who have forgotten I shall repeat it. I am merely giving it as I have taken it from the papers with no elaboration and no opinion—a mere statement of facts. It was a celebrated case at the time and stirred the world to wonder. Indeed, it still is celebrated, though to the layman it is forgotten.
It has been labelled and indexed and filed away in the archives of the profession. To those who wish to look it up it will be spoken of as one of the great unsolved mysteries of the century. A crime that leads two ways, one into murder—sordid, cold and calculating; and the other into the nebulous screen that thwarts us from the occult.
Perhaps it is the character of Dr. Holcomb that gives the latter. He was a great man and a splendid thinker. That he should have been led into a maze of cheap necromancy is, on the face, improbable. He had a wonderful mind. For years he had been battering down the scepticism that had bulwarked itself in the material.
He was a psychologist, and up to the day the greatest, perhaps, that we have known. He had a way of going out before his fellows—it is the way of genius—and he had gone far, indeed, before them. If we would trust Dr. Holcomb we have much to live for; our religion is not all hearsay and there is a great deal in science still unthought of. It is an unfortunate case; but there is much to be learned in the circumstance that led the great doctor into the Blind Spot…