Before the doctor recovered himself the man was well past, and disappearing in the throng. He hurried after, determined to overtake him, and to make a full and satisfying perusal of his face and figure. He found that difficult, however, because of the man's singular style of progression. To maintain an even pace for himself, moreover, Lefevre had to walk very much in the roadway, the dangers of which, from passing cabs and omnibuses, forbade his fixing his attention on the man alone. Yet he was more and more piqued to look him in the face; for the longer he followed him the more he was struck with the oddity of his conduct. He had already noted how he hurried over the empty spaces of pavement and lingered sinuously in the thronged parts; he now remarked further that those who came into immediate contact with him (and they were mostly young people who were to be met with at that season of the night) glanced sharply at him, as if they had experienced some suspicious sensation, and seemed inclined to remonstrate, till they looked in his face.

Lefevre could not arrive at a clear front view till, by Charing Cross Station, the man turned on the kerb to look after a handsome youth who crossed before him, and passed over the road. Then the doctor saw the face in the light of a street-lamp, and the sight sent the blood in a gush from his heart. It was a dark hairless face, terribly blanched and emaciated, as if by years of darkness and prison, with the impress of age and death, but yet with a wistful light in the eyes, and a firm sensuousness about the mouth that betrayed a considerable interest in life. He turned his eyes away an instant, to bring memory and association to bear. When he looked again the man was moving away. At once recognition rushed upon him like a wave of light. The terribly worn, ghastly features resolved themselves into a kind of death-mask of Julius! The wave recoiled and smote him again. Who could the man be, therefore, who was so like Julius, and yet was not Julius?—who could he be but Julius's father,—that Hernando Courtney whom Dr Rippon believed he had seen the evening before?

Here was a coil to unravel! Julius's father—the Spanish marquis that was—supposed to be dead, but yet wandering in singular fashion about the London streets, clearly not desiring, much less courting, opportunities of being recognised; Julius not caring to speak of his father, apparently ignoring his continued existence, and yet apparently knowing enough of his movements to avoid him when he came to London by suddenly removing "into the country" without leaving his address. What was the meaning of so much mystery? Crime? debt? political intrigue? or, what?

The mysterious Hernando went on his way, by the southern sweep of Trafalgar Square and Cockspur Street, to the Haymarket, and Lefevre followed with attention and curiosity bent on him, but yet with so little thought of playing spy that, if Hernando had gone any other way or had returned along the Strand, he would probably have let him go. And as they went on, the doctor could not but note, as before, how the object of his curiosity lingered wherever there was a press of people, whether on the pavement or on a refuge at a crossing, and hurried on wherever the pavement was sparsely peopled or whenever the persons encountered were at all advanced in years. Indeed, the farther he followed the more was his attention compelled to remark that Hernando sharply avoided contact with the weakly, the old, and the decrepit, and wonder why the young people of either sex whom he brushed against should turn as if the touch of him waked suspicion and a something hostile. Thus they traversed the Haymarket, the Criterion pavement, and, flitting across to the Quadrant, the more popular side of Regent Street, among pushing groups, weary stragglers, and steady pedestrians. Lefevre had a mind to turn aside and go home when he was opposite Vigo Street, but he was drawn on by the hope of observing something that might give him a clue to the Courtney mystery. When Oxford Circus was reached, however, Hernando jumped into a cab and drove rapidly off, and Lefevre returned to his own fireside.

He sat for some time over a cigar and a grog, walking in imagination round and round the mystery, which steadfastly refused to dissolve or to be set aside. His own honour, and perhaps the peace of his mother and sister, were involved in it. He was resolved to ask Julius for an explanation as soon as he could come to speech with him; but yet, in spite of that assurance which he gave himself, he returned to the mystery again and again, and beset and bewildered himself with questions: Why was Julius estranged from his father? What was the secret of the old man's life which had left such an awful impress on his face? And why was he nightly haunting the busiest pavements of London, in the crowd, but not of it, urged on as by some desire or agony?

He went to bed, but not to sleep. In the quiet and the darkness his imagination ranged without constraint over the whole field of his questionings. He went back upon Dr Rippon's story of the Spanish marquis, and fixed on the mention of his occult studies. He saw him, in fancy, without wife or son, cut off from the position and activities in his native country which his proper rank would have given him, sequester himself from society altogether, and give himself up to the study of those Arabian sages and alchemists in whom he had delighted when he was a young man. He saw him shun the daylight, and sleep its hours away, and then by night abandon himself like another Cagliostro to strange experiments with alembic and crucible, breathing acrid and poisonous vapours, seeking to extort from Nature her yet undiscovered secrets,—the Philosophers Stone, and the Elixir of Life. He saw him turn for a little from his strange and deadly experiments, and venture forth to show his blanched and worn face among the throngs of men; but even there he still pursued his anxious quest of life in the midst of death. He saw him wander up and down, in and out, among the evening crowd, delighting in contact with such of his fellow-creatures as had health and youth, and seeking, seeking—he knew not what. From this phantasmagoria he dozed off into the dark plains of sleep; but even there the terribly blanched and emaciated face was with him, bending wistful worn eyes upon him and melting him to pity. And still again the vision of the streets would arise about the face, and the sleeper would be aware of the man to whom the face belonged walking quickly and sinuously, seeking and enjoying contact with the throng, and strangely causing many to resent his touch as if they had been pricked or stung, and yet urged onward in some further quest,—an anxious quest it sometimes resolved itself into for Julius, who ever evaded him.

Thus his brain laboured through the dead hours of the night, viewing and reviewing these scenes and figures, to extract a meaning from them; but he was no nearer the heart of the mystery when the morning broke and he was waked by the shrill chatter of the sparrows. The day, however, brought an event which shed a lurid light upon the Courtney difficulty, and revealed a vital connection between facts which Lefevre had not guessed were related.

Chapter V.

The Remarkable Case of Lady Mary Fane.

It was the kind of day that is called seasonable. If the sun had been obscured, the air would have been felt to be wintry; but the sunshine was full and warm, and so the world rejoiced, and declared it was a perfectly lovely May day,—just as a man who is charmed with the smiles and beauty of a woman, thinks her complete though she may have a heart of ice. Lefevre, as he went his hospital round that afternoon, found his patients revelling in the sunlight like flies. He himself was in excellent spirits, and he said a cheery or facetious word here and there as he passed, which gave infinite delight to the thin and bloodless atomies under his care; for a joke from so serious and awful a being as the doctor is to a desponding patient better than all the drugs of the pharmacopoeia: it is as exquisite and sustaining as a divine text of promise to a religious enthusiast.