"Then there was the personality of the thief. One knew a good deal about him by this time. He was an ingenious man; a fairly good workman, at any rate, with metal-worker's tools, but not a skilled jeweller. He must have been able to make a key from a wax squeeze—unless he were Woodstock himself, which he pretty certainly was not; for none of the others had sufficiently free access to the strong-room to do what had been done. Then he must have had at least a simple working knowledge of electric batteries, since we could be fairly certain that he made the electrotypes himself; he would never have run the risk of putting the forgery out to the trade. He was clearly a secretive, self-contained man. The only fallacy that I had to guard against was the possibility of a confederate outside the office, who might have done the actual work; but this possibility seemed to be negatived by the whole character of the robbery and especially by one very odd feature in it, which was this: Professor Eccles had noticed with surprise that many of the stones which were taken were of quite trifling intrinsic value, so trifling that, if they had been sold, they would hardly have realized enough to pay the cost of replacing them with the specially-made counterfeits. Indeed, in one case, at least, the thief must have lost money on the transaction, for he had taken a fine moonstone and replaced it with an inferior one of the same dimensions. But the value of the original was only about ten shillings, and he must have spent more than that on the replacement. The professor was greatly puzzled by this, having assumed, of course, that the gems were stolen to sell. But to me, this rather anomalous feature of the robbery offered a very curious suggestion; which was that no sale of the booty had ever been contemplated. It looked like a collector's robbery; and if there had been a collector in any way connected with the parties, I should have given him my very close attention. But, so far as I knew, there was none. Nevertheless, this peculiarity of the robbery had to be borne in mind when I came to make my investigations on the spot.
"Let me now briefly describe those investigations. Their main object was to ascertain whether there were any traces of wood-dust in the premises of either Hollis or Woodstock, and the method was this: in each case, a rough ground-plan of the premises was made; then small areas of the floors were cleaned thoroughly with a specially constructed vacuum cleaner and the dust from each area put into an envelope marked with a number, which number was also marked in the plan on the spot from which the dust had been collected. The collection was carried out by my laboratory assistant, Mr. Polton, whom you have seen, leaving me free to make inquiries and to inspect the premises. Of course, the samples of dust had to be brought home to be examined in the laboratory, so we were hampered by the circumstance that we did not know at the time whether any wood-dust had or had not been obtained. But this proved to be of no importance.
"We operated first at Mr. Hollis's house, regardless of his scornful protests Then we went on to Mr. Woodstock's office; and there I had a rather remarkable experience. As I entered with Mr. Woodstock, I saw an elderly man engaged in repairing an electric bell; and a glance at his hands and the way in which he manipulated his tools showed the unmistakable facility and handiness of the skilled workman. It was a little startling; for here were two of the characteristics of the unknown person I was endeavouring to identify. This man had evident skill in the use of metal-worker's tools and he clearly knew a good deal about electric batteries. And when I learned that this Mr. Wampole was the office-keeper and that he evidently had a key of the premises, I was still further impressed. I began to revise my opinion as to there being no confederate; for the fact remained that Osmond had absconded and that his disappearance—until it was otherwise explained—undeniably connected him with the robbery. I began to think it possible that there had been a partnership and that he had been used as a cat's paw. Meanwhile, I had to find out as much as I could about him, and to this end I sat down by Wampole, as he worked at refitting the batteries, and questioned him on the subject of Osmond's appearance, habits, temperament, and circumstances. It is only fair to him to say that he scouted the idea of Osmond's having committed the robbery and gave excellent reasons for rejecting it. On the other hand, his description of Osmond made it clear that the hairs which I had found in the boxes were Osmond's hairs; and when I expressed a wish to inspect Osmond's desk, he took me to it readily enough, and as it was unlocked, he threw up the lid and showed me the interior. The most interesting thing in it, from my point of view, was a pair of hair-brushes; from which I was able to extract several moustache hairs which appeared—and subsequently turned out to be—identically similar to those found in the boxes.
"The examination of Osmond's desk suggested a similar examination of all the other desks in the office, finishing up with that belonging to Mr. Wampole. And it was in examining that desk that I did really receive somewhat of a shock. For when we came to turn out its contents, I found that these included, in addition to a number of metal-worker's tools, a work man's linen apron and some battery terminals and insulated wire, a stamp-album, a tray of military buttons and badges and old civilian buttons, and another tray of old coins.
"The coincidence was too striking to be ignored. Here was a man who had free access to these premises night and day, and who corresponded in every particular with the unknown robber. We had already seen that he had the skill and special knowledge that were postulated; now this stamp-album, these buttons, badges, and coins, wrote him down an inveterate collector. If I had looked on Mr. Wampole with interest before, I now regarded him with very definite suspicion. Whatever significance the hairs had seemed to have was now entirely against him; for there were the brushes, easily available, and he knew it.
"I must confess that I was greatly puzzled. Every new fact that I observed seemed more and more to confuse the issues. With the exception of the hairs—which were, at least, doubtful evidence—I had found nothing whatever to incriminate Osmond; whereas Wampole presented a highly suspicious appearance. But Osmond had absconded; which seemed to put Wampole outside the inquiry, excepting as a confederate. And when I went with Wampole to Osmond's rooms, my inspection of them only left me more puzzled; for the personality that they reflected was the very opposite of that indicated by the nature and method of the robbery. Instead of the avarice and cunning that characterized the robber, the qualities suggested were those of a hardy, adventurous, open-air man, simple to austerity in his tastes and concerned with any thing rather than wealth and worldly possessions. The very photographs on the mantelpiece proclaimed the incongruity, especially that of his mother, whom Wampole informed me he strongly resembled; which showed the face of a dignified, strong, resolute, courageous looking lady, whose son I found it hard to picture, first as a thief, and then as a panicky fugitive. Yet the fact remained that Osmond had absconded.
"However, when we got home and proceeded to question the samples of dust in the laboratory, they gave an answer that was unmistakable. The results were roughly thus: the samples from Hollis's house contained no wood-dust; those from Osmond's rooms contained none; that from the inside of his desk contained none and that from his office floor barely a trace. Those from the floor of the clerks' office yielded a very small quantity, but that from the floor by Wampole's desk contained quite a large amount, while the dust extracted from the interior of his desk was full of the castings—derived, no doubt, to a large extent from the apron which he had kept in it. So the murder was out. The man who had packed those boxes was Mr. Wampole, and the hairs which I found in them had come from Osmond's brushes.
"One thing only remained to be done: the final verification. The wood-dust had to be traced to its ultimate source in Wampole's lair. This invaluable service was carried out by my assistant, Polton, who, with extraordinary tact and skill, contrived to get a glimpse into the workshop during Wampole's absence; and when he peeped in, the first object that met his eye was a sparrowhawk, planted in a little log of cherry-wood that was absolutely riddled by the worm. That concluded the inquiry so far as I was concerned, though some further work had to be done to
enable the police to act. But no doubt Mr. Penfield has told you about the lapidary and the police raid which resulted in Wampole's death and the discovery of the gems in his possession."
"Yes," Osmond replied, "I think we have had full details of the final stages. Indeed, Mr. Penfield had given us most of the facts that you have mentioned, but neither he nor we were able to connect them completely. It seemed to us as if you had made one or two very fortunate guesses; but now that I have heard your reasoned exposition I can see that there was no element of guessing at all."
"Exactly," agreed Mr. Penfield; "every stage of the argument rests securely on the preceding stages. I am beginning to suspect that we lawyers habitually underestimate the man of science."
"Yes," said Osmond, "I am afraid that is so. It is pretty certain that no lawyer could have solved this mystery."
"I have to remind you," Thorndyke remarked, "that the man of science was not able to solve it. He was able only to solve a part of it. The thief was identified and the stolen property traced to its hiding-place. But one question remained and still remains unanswered. Why did John Osmond disappear?"
Osmond and Betty both smiled, and the latter asked: "Did you never form any guess on the subject?"
"Oh, yes," replied Thorndyke, "I made plenty of guesses. But that was mere speculation which led to nothing. It occurred to me, for instance, that he was perhaps drawing a red-herring across the trail—that he was shielding the real criminal. But I could find no support for the idea. I could see no reason why he should shield Wampole—unless he was a confederate, which I did not believe. If the criminal had been Hepburn, it would have been at least imaginable. But there was never the shadow of a suspicion in regard to Hepburn. No, I never had even a hypothesis; and I haven't now."
"I am not surprised," said Osmond, with a slightly sheepish grin. "It was beyond even your powers to conceive the possible actions of an impulsive fool who has mistaken the facts. However, as I have put you to the trouble of trying to account for my unaccountable conduct, it is only fair that I should make it clear, if I can; even though I know that when I have finished, your opinion of me will be like Bumble's opinion of the Law—that I am 'a ass and a idiot.'"
"I hardly think that very likely," said Thorndyke, turning a twinkling eye on Betty. "As I said just now, you seem to have brought a most unpromising affair to an extraordinarily satisfactory conclusion which is not at all suggestive of 'a ass and a idiot.'"
"But," objected Osmond, "the satisfactory conclusion which you are putting to my credit is entirely your own work. I set up the obstacles; you knocked them down. However, we need not argue the point in advance. I will tell you the story and you shall judge for yourself."
XX. OSMOND'S MOTIVE
"In order to make my position clear," Osmond began, "it is necessary for me to say certain things to you, my best and kindest of friends, which I should not confide to any other human creature. I shall have to confess to thoughts and suspicions which were probably quite unjust and unreasonable and which are now uttered subject to the seal of the confession."
The two lawyers bowed gravely in acknowledgement, and Osmond continued: "I was introduced to Mr. Woodstock, as you know, by my brother-in-law, Mr. Hepburn; and I may say that I accepted the post chiefly that I might be near my sister. She and I had always been very devoted to one another, and from the time when I left Oxford up to the date of her marriage we had lived under one roof; and that was how she came to make the acquaintance of Hepburn.
"I did not encourage the intimacy, but neither could I hinder it. She was of a responsible age and she knew her own mind. The end of it was that, after an engagement lasting a few months, they were married, and there was nothing more to be said. But I was rather troubled about it. I had known Hepburn nearly all my life. We had been at school together and the greater part of our time at Oxford, where we belonged to the same college, Merton. Through all those years we were on the footing of intimate friends—rather oddly, for we were very different in temperament and tastes, and, indeed, had very little in common—and we knew one another extremely well. I don't know what Hepburn thought of me, but I must confess that I never had much of an opinion of him. He was a clever man; rather too clever, to my taste. An excellent manager, very much on the spot, and in fact decidedly cunning; fearfully keen on the main chance, fond of money and ambitious to be rich, and none too scrupulous in his ideas. At school he was one of those boys who contrive to increase their pocket-money by all sorts of mysterious little deals, and the same tendency showed up at Oxford. I didn't like his ways at all. I always had the feeling that, if he should ever be tempted by an opportunity to make a haul by illegitimate means, he might be led by his acquisitiveness to do something shady.
"However, his morals were not in my custody and were none of my business until he began to visit us at my rooms, where I was living with my sister. Then I gave her a few words of warning; but they took no effect. He made himself acceptable to her, and, as I have said, they became engaged and eventually, when Hepburn took up his job with Woodstock, married. For a year or two I saw little of them—I was articled to a solicitor in London; but when I was fully qualified Hepburn, at my sister's suggestion, offered to speak to Woodstock on my behalf, and the result was that I entered the office, as you have heard.
"And now I come to the particular transaction. Woodstock's office was, as you know, conducted in a rather happy-go-lucky fashion, especially as regards the strong-room. The key hung on the wall practically all day. Usually, Woodstock took it away with him at night; but quite frequently, when Woodstock was away for a night, it would be left in Hepburn's charge. Occasionally it was left with me; and on one occasion, at least, Wampole had charge of it for a night. And each of us four, Woodstock, Hepburn, Wampole, and myself, had a key of the outer door and could enter the premises whenever we pleased. You will remember, too, that the house was empty, out of office hours. There was no caretaker.
"Now, one night when I had been out on the river and got home rather late, I found that I had run out of tobacco. The shops were all shut, but I remembered that there was a nearly full tin in my desk at the office, so I ran round there to fill my pouch. I am always rather quiet in my movements, and perhaps, as it was late, I may have moved, instinctively, more silently than usual. Moreover, I still wore my rubber-soled boating-shoes. Well, I let myself in with my key and entered the office, leaving the outer door ajar. As I came in through the clerks' office I could see through the open doorway that there was a light in Woodstock's office and that the door of the strong-room was open. A good deal surprised at this, I stopped and listened. There were sounds of someone moving about in the strong-room, and I was on the point of going in to see who it was when Hepburn came out with one of Hollis's boxes in his hand. And at that moment the outer door blew-to with a bang.
"At the sound of the closing door Hepburn started and whisked round to re-enter the strong-room. Then he saw me standing in the dark office, and I shall never forget his look of terror. He turned as white as a ghost and nearly dropped the box. Of course I sang out to let him know who I was and apologized for giving him such a start, but it was a minute or two before he recovered himself, and when he did he was decidedly huffy with me for creeping in so silently. His explanation of the affair was quite simple. He had been up to London with Woodstock, who had stayed in town for the night and had sent him down with a consignment of valuable securities which the firm were taking charge of. Not liking to have them in his personal possession, he had come on to the office to deposit them in the strong-room; and then, while he was there, he had taken the opportunity of checking Hollis's boxes, which he informed me he was in the habit of doing periodically and usually after office hours.
"The explanation was, as I have said, quite simple; indeed, no explanation seemed to be called for. There was nothing in the least abnormal about the affair. When I had once more apologized for the fright that I had given him, I filled my pouch and we went away together, and I dis
missed the matter from my mind.
"I don't suppose I should ever have given the incident another thought if nothing had occurred to remind me of it. The months went by and it seemed to have passed completely out of my memory. Then Hollis dropped his bomb-shell into the office. Some one among us, he declared, had secretly opened his boxes and stolen his gems; and until that somebody was identified, we were all more or less under suspicion.
"Of course, Hepburn scouted the idea of there having been any robbery at all, and so did Wampole. They both pointed to the unbroken seals and declared that the thing was a physical impossibility; and I should have been disposed to take the same view, in spite of the strong evidence of the missing emerald. But as soon as I heard the charge, that scene in the office came back to me in a flash; and now, somehow, it did not look by any means so natural and simple as it had at the time. I recalled Hepburn's terrified stare at me; his pale face and trembling hands. Of course, my sudden appearance must have been startling enough to upset anyone's nerves; but it now seemed to me that his fright had been out of all proportion to the cause.
"Then, when I came to think it over, the whole affair seemed very characteristic of Hepburn; of his greed for money, his slyness, his cunning, calculating ways. The property which had been stolen was of great value, and I did not doubt that Hepburn would have annexed it without a qualm if he could have done so with complete safety. But it had been done so skilfully that the risk had been almost entirely eliminated. It was a very clever robbery. But for the merest chance the things would have gone back to Hollis's cabinet unchallenged; and when they had been there a week or two the issues would have become hopelessly confused. It would have been impossible to say when or where the robbery had been committed. The whole affair had been most cunningly planned and neatly carried out. I felt that, if Hepburn had been the robber, that was just the way in which he would have done it.
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