Fifi needed no further invitation when he had left my neighbourhood. She bundled herself across the room to me, her thin white body curled like a comma, wriggling with delight and making incomprehensible little explanations of her previous conduct. But the moment that Hampden moved in his chair, she bolted away from me again.

He laughed and got up.

“Well, I think I shall go to bed now that you have come to keep Arthur company,” he said. “By the way, where’s your cat, Arthur? I haven’t seen her about all day.”

He was facing sideways to Roupert as he spoke, and I noticed that he did not turn his head towards him. This gave a certain casual cursory tone to his question, making it appear a mere careless inquiry.

“I haven’t seen her either,” said Roupert. “Perhaps, after taking counsel with Fifi, she has thought it prudent to fly from your baleful presence. Good night, Frank. Can you manage for yourself with your bandaged arm, or shall I come and help you?”

“Oh, I’m all right, thanks,” he said; “good night. A kind good night, Fifi. We shall be good friends before long.”

Arthur Roupert had retired some two years before from regular medical practice, in which, as all the world knows, he was undoubtedly the first authority on disease and aberrations of the brain and nervous system, devoting his attention more particularly to those riddles of obscure and baffling disorders to which he so often supplied strange and correct answers. He was possessed of an ample competence, and so, finding that his large professional practice did not permit him the leisure which was necessary for these exploratory studies, he had, though always willing to be consulted by his colleagues, thrown up an active career for one of research. He wanted to learn rather than to practise, and without precisely mistrusting the methods which had earned him so brilliant a success, had inferred the presence of huge fields of the unknown, huge expanses of further possibilities which would perhaps put utterly out of date the most advanced of theories and treatments hitherto recognized in his profession. At the time of his retirement he had once talked to me about the uncharted seas on to which he proposed to push forth.

“The most advanced of actual practitioners,” he said, “are but groping in the dark on the threshold of real knowledge, feeling for the handle, fumbling for the bell. At the most, that is to say, in cases of brain disease and nerve disorder we try to get at the mind of the patient, and influence that, so that it, not we, may exert its healing power, and cure the imperfect functioning of the material part. Of course that is a tremendous step forward when we look at what medical science was twenty years ago, when doctors prescribed tonics, tonics to heal the physical damage caused by a disordered mind. But mind itself is but a very subordinate denizen in that house of mystery which we call man.

“Mind is no more than the servant who comes to the door, and takes your hat and coat, and tells you in a word or two how the patient has been. Mind is not the master of the house, whom you have really come to see, and who sits there alone, mortally sick, perhaps, and in terror and darkness for the master of the house is the spirit. We have got to examine him before we can touch the source of these diseases. For the farther that science advances, the more certain it is that there is a master sitting within to whom the mind is only the servant. As for the body, the tissues, the nerves, the grey matter, what shall we say that is? Why, it’s no more than the servant’s clothes, his jacket, or his boots. I’m not going to stay talking in the hall to ‘mind,’ the servant, any longer. I shall leave him there, and go straight up to the sick-chamber. I shall be called all sorts of names—charlatan, spiritualist, what you will—but I don’t care two straws about that. Besides, I know quite well that my colleagues will still be glad to call me in when they are puzzled, and I hope to be better equipped to help them.... I won’t reject any jungle-path without exploring it, not witchcraft, nor demoniacal possession, nor all the myths which science thinks she has exploded. In its first origin everything must be spiritual, be it comet or toothache or genius. Just as mental suggestion has taken the place of tonics, so must spiritual healing take the place of mental suggestion. The spirit is the original manifestation of God in man, and it is on prayer and on faith that the whole science of healing will some day rest. But first we have to investigate the conditions, the environment, the life....”

For these two years, then, which had followed his retirement, Roupert had given himself to these studies of occult and spiritual influences, learning about the healing powers contained in mental suggestion, and trying to get behind that into the more elemental and essential mysteries of man; leaving the servant, as he had said, in the hall of the house, while he went further into the presence of the master of the house. Often, during these “go-to-bed” cigarettes that multiplied themselves into the night, he told me tales that did not make going to sleep any easier. Nothing was too extravagant for his investigations; witchcraft, spiritualism, Satanism, the healing touch, and, above all, demoniacal possession were the subjects of this study that went deeper into the human organism than mind. There was no myth or exploded superstition that he did not examine, to see whether the explosion had been complete and shattering, or whether among the débris there did not remain some grains of solid stuff that were still solid, though science had affirmed that a puff of scattered smoke was all that was extant.... Consequently this evening, when Frank Hampden had gone to bed, I was quite prepared to find that Roupert had something to tell, some guess to hazard that had illumined his inquiries, the more so indeed because I had not seen him for some dozen nights.