been closely associated with Maddock; but Maddock was, it seemed, a habitual criminal. Could this fact have been known to the Samways? Or was it that the cunning forger and swindler had sheltered himself behind their respectability. It was impossible for me to say.
Then there was the strange and perplexing case of the man Maddock, himself. I could make nothing of that, had not, indeed, been aware that there had been a "case", until Thorndyke's investigations had put me in possession of the fact. And even now I could see nothing on which to base any suspicion, apart from the attempts on my life, which we were assuming to be in some way connected with events that had occurred in Maddock's house. The cause of death was apparently not "Morbus Cordis"; which might easily enough be, seeing that the diagnosis of heart disease was a mere guess on Batson's part. But if not Morbus Cordis, what was it? Thorndyke apparently knew, and seemed to hint that it was something other than ordinary disease. Could there have been foul play? And, if so, were the Samways involved in it in any way? It seemed incredible, for had not Maddock himself suspected that he was in a dangerous state of health. There was certainly one possibility which I considered with a good deal of distaste; namely, that Maddock had been in a hypochondriacal state and that the Samways had taken advantage of his gloomy views as to his health to administer poison. The thing was actually possible; but I did not entertain it; for, even if one assumed that poison had been administered, at any rate, the cremation of the body was not designed to hide the traces of the crime. The Samways had nothing to do with that; the cremation had been adopted in preference to burial by Maddock's own wish.
So my thoughts flitted from topic to topic, with occasional interludes of Surface Markings, through the lazy forenoon until Polton came to lay my solitary luncheon. And after this little break in the comfortable monotony, another spell of meditative idleness set in. Polton was busy upstairs in the laboratory with some photographic copying operations and I was disposed to wander up and look on; but my small friend politely but very firmly vetoed any such proceeding. On some other occasion he would be delighted to show me the working of the great copying camera, but, just now, he had a big job in hand, and, as he was working against time, he would prefer to be alone. He even suggested that I might attend to any stray callers and make my own tea on the gas-ring so as to avoid interrupting his work; and when I had agreed to relieve him to this extent, he thanked me profusely and retired and I saw no more of him.
For some time after his departure, I stood at the window looking out across the wide space at Paper Buildings and the end of Crown Office Bow. It was a wretched afternoon. The yellow, turbid sky brooded close down upon the houseroofs and grew darker and more brown moment by moment, as if the invisible sun had given the day up in despair and gone home early.
A comfortless powdering of snow filtered down at intervals and melted on the pavements, along which depressed wayfarers hurried with their coat collars turned up and their hands thrust deep into their pockets. I watched them commiseratingly, reflecting on the superior advantages of being within doors and forbidden to go out; and then, having flung another scoopful of coal on the fire, I betook myself once more to the armchair, the Surface Markings and idle meditation.
It was some time past four when my reflective browsings had begun to proceed in the direction of the teakettle, that I heard a light footstep on the landing as of someone wearing goloshes. Then a letter dropped softly into the box, and, as I instantly pushed back my chair to rise, the footsteps retreated. I crossed the room quickly and opened the door; but the messenger had already disappeared down the dark staircase, and had gone so silently on his rubber soles that, though I listened attentively, I could hear no sound from below.
Having closed the door, I extracted the letter from the box and took it over to the window to examine it, when I was not a little surprised to find that it was addressed to W. M. Howard, Esq. This was the first communication that I had received in my borrowed name, and my surprise at its arrival was not unreasonable, for, of the few persons who knew me by that name, none—with the exception, perhaps, of Mr. Marchmont—was in the least likely to write to me.
But, if the address on the envelope had surprised me, the letter itself surprised me a good deal more; for though the writer was quite unknown to me, even by name, he seemed to be in possession of certain information concerning me which I had supposed to be the exclusive property of Thorndyke, Jervis, Polton and myself. It bore the address, 29, Fig-tree Court, Inner Temple, and ran thus:
"DEAR SIR,
I am taking the liberty of writing to you to ask for your assistance as I happen to know that my friends, Drs. Thorndyke and Jervis, are away at Maidstone and not available at the moment, and I understand that you have some acquaintance with medical technicalities.
The circumstances are these. At half-past five today I shall be meeting a solicitor to advise as to action in respect of a case in which I am retained; and the decision as to our action will be vitally affected by a certain issue on which I am not competent to form an opinion for lack of medical knowledge. If Dr. Thorndyke had been within reach I should have taken his opinion; as he is not, it occurred to me to ask if you would fill his place on this occasion, it being, of course, understood that the usual fee of five guineas will be paid by the solicitor.
If you should be unable to come to the consultation, do not trouble to reply, as I am now going out and shall not be returning until five-thirty, the time of the appointment. I am,
Yours faithfully,
ARTHUR COURTLAND."
The contents of this letter, as I have said, surprised me more than a little. How, in the name of all that was wonderful, had this stranger, whose very name was unknown to me, come to be aware that I had any knowledge of medicine? Not from Thorndyke, I felt perfectly sure; nor from Jervis, who, notwithstanding a certain flippant facetiousness of manner, was really an extremely cautious and judicious man. Could it be that my principal was overseen in his trusted laboratory assistant? Was it conceivable that the suave and discreet Polton had moments of leakiness, when, in unofficial talk outside, he let drop the secrets of which his employer's unbounded confidence had made him the repository? I could not believe it. Not only did Polton appear to be the very soul of discretion; there was Thorndyke himself; he was not the man to give his confidence to anyone until after the most exhaustive proof of the safety of so giving it. Nor was he a man who was likely to be deceived; for nothing escaped his observation, and nothing that he observed was passed over without careful consideration.
My lethargy having been shaken off, I addressed myself to the task of preparing tea; and, as I listened to the homely crescendo of the kettle's song, I turned the matter over in all its bearings. By some means this Mr. Courtland had become aware that I was either a doctor or a medical student. But by what means? Was it possible that he had merely inferred from the circumstance of my being associated with Thorndyke that I was of the same profession? That was just barely conceivable; but, if he had, then, as Jervis had said of Father Humperdinck, he must be "a devil at guessing."
As I made the tea and subsequently consumed it, I continued to ruminate on the contents of that singular letter. No answer to it was required. Then what was Mr. Courtland going to do if I did not turn up? He admitted that the issue, which seemed to be an important one, was beyond him, and yet he had to give an answer to the solicitor. And he was prepared to pay five guineas for the advice of a man of whom he—presumably—knew nothing. That was odd. In fact, the whole tone of the letter, with its inconsistent mixture of urgency and casual trusting to chance, seemed irreconcilable with the care and method that one expects from a professional man.
And there was another point. The time of the consultation was half-past five. Now within an hour of that time Thorndyke would be back—or even sooner if he came by the earlier train as he had done on the previous day—as Mr. Courtland must have known, since he knew whither my principal had gone, and he must have often attended assizes himself. Could he not have waited an hour? And again; had this business been sprung upon him so suddenly that he had had no time to get
