“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.
“Moreover, the robbery—if there had really been one, as I had no doubt there had—seemed to lie between three, or at the most, four of us: those who had easy access to the strong-room. But of these Woodstock was out of the question, Wampole had practically no access to the strong-room and was an old and trusted servant of irreproachable character, and as I was out of it, there remained only Hepburn. Whichever way I thought of the affair, everything seemed to point to him, and whenever I thought of it the vision came back to me of that scared figure standing by the the strong-room door with the box of gems in his hand.
“But I need not go into any further detail. The bald fact is that it appeared to me beyond a doubt that Hepburn was the thief, and the only question was, what was to be done. The fat was in the fire. The police would be called in. The stolen property would be traced and the crime pretty certainly brought I home to Hepburn. That was how I forecast the probable course of events.
“Now, if Hepburn had been a single man it would have been no affair of mine. But he was my sister’s husband and the father of my two little nephews, who had been to me like my own children. If Hepburn had been convicted of this crime, my sister’s life would have been absolutely wrecked. It would have broken her heart; and as for the two little boys, their future would have been utterly and irrevocably damned. I couldn’t bear to think of it. But was there any way out? It seemed to me that there was. I was a bachelor with no home-ties but my sister and the kiddies. I had always had a desire to travel and see the world. Well, now was the time. If I cleared off to some out-of-the-way region, the dangerous inquiries at the office would stop at once and the whole hue-and-cry would be transferred to me. So I decided to go. And the place that I selected as my destination was Adaffia, where I knew that an old friend of Hepburn’s had settled as a trader.
“But I thought I would take Hepburn into my confidence and give him a chance of doing the same by me, only I am afraid I rather muddled the business. The fact is that, when it came to the point, I was a little shy of telling him exactly what was in my mind. It is a delicate business, telling a man that you have discovered him to be a thief. So I hummed and hawed and approached the subject gradually by remarking that it looked as if there would be wigs on the green presently. But that cat didn’t jump. Hepburn declined to admit that any robbery had occurred in the office. However, I persisted that we should presently have the police buzzing about the office and that then the position would become mighty uncomfortable for some of us. Still, he professed to be—and, of course, was—quite unconcerned; but when I went on to suggest that if I took a little holiday the state of affairs at the office would be made more comfortable for everybody, he stared at me in astonishment, as well he might. Of course, I could think of nothing but what I had seen that night when I caught him coming out of the strong-room, and I took it for granted that he realized what was in my mind, so that his astonishment didn’t surprise me.
“‘Wouldn’t it look a bit queer if you went away just now?’ he asked.
“‘That is just the point,” I replied. ‘I’ll hop off, they will leave the office alone and there will be no more trouble.’
“He seemed a good deal puzzled, but he didn’t raise any objections; and of course he did not make any confidences, which again did not very much surprise me. He was the very soul of caution and secretiveness.
“‘Where did you think of going for your holiday?’ he asked.
“I told him that I thought of running over to Adaffia to call on Larkom, the trader there, and suggested that he should send Larkom a letter introducing me. He didn’t much like writing that letter, and he liked it less when I mentioned that I proposed to travel under the name of Walker. However, Larkom was an old friend whom he knew that he could trust, so, in the end, he agreed to write the letter. And that settled the affair. In due course I went off in the comfortable belief that he understood the position exactly, leaving him considerably surprised but quite confident that he knew all about the robbery. It was a very pretty comedy of errors; but it would have become a tragedy but for your wonderful insight and for the strange chance that the results of your investigations should have found their way into the newspapers. That is to say, if it was a chance.”
“It was not a chance,” said Mr. Penfield. “As a matter of fact, Dr. Thorndyke wrote out the account himself and broadcast it to all the papers, including those of the United States.”
“Why did you do that?” Betty inquired, with a glance of intense curiosity at Thorndyke.
“For two reasons,” the latter replied: “one obvious, the other less so. In the first place, Osmond had been publicly accused, and as there had been no trial, there had been no public withdrawal of the accusation. But he was a man of honourable antecedents and irreproachable character. Common justice demanded that his innocence should be proclaimed at least as widely as had been the presumption of his guilt. Even if he were dead, it was necessary that his memory should be cleared of all reproach. But, in the second place, it was not at all clear to me that he was dead.”
“The deuce it wasn’t!” exclaimed Osmond. “I thought I had settled that question beyond any possible doubt. But you were not satisfied?”
“No. The report which reached me was singularly unconvincing, and there were certain actual discrepancies. Take first the general appearance of the alleged occurrences; here is a man, a fugitive from justice, whose purpose is to disappear. He lands at Adaffia and in the course of a week or two is reported to have died. Now, West Africa is a very unhealthy place, but people don’t usually drop down dead as soon as they arrive there. On the contrary. The mortality among newcomers is quite small. Death is most commonly due to the cumulative effects of repeated attacks of malaria and does not ordinarily occur during the first year of residence. Osmond’s death under the circumstances alleged was not in agreement with ordinary probabilities.
“Then the fact of death was not certified or corroborated. The officer who reported it had not seen the body; he had only seen the grave. But to a man of my profession, the uncorroborated grave of a man who is admittedly trying to escape from the police is an object of deep suspicion. The possibility of a sham burial was obvious. This man, on leaving his home, had made a bee-line for Adaffia, an insignificant village on the African coast the existence of which was unknown to the immense majority of persons, including myself. How came he to know of Adaffia? and why did he select it as a hiding-place? The obvious answer suggested was that he had a friend there. But as there was only one white man in the place—who must have been that friend—a sham death and burial would have been perfectly easy and a most natural expedient.
“Then there was the discrepancy. Osmond was reported to have died of blackwater fever. Now, this was almost an impossibility. Blackwater fever is not a disease which attacks newcomers. It lies in wait for the broken-down coaster whose health has been sapped by long-standing chronic malaria. In the immense majority of cases it occurs during, or after the third year of residence. I have found no record