.

in this case?" I asked.

      "Yes; I have several theories, one of which I especially favour, and I am waiting with great interest such new facts as may indicate to me which of these theories is probably the correct one."

      "It's no use your trying to pump him, Berkeley," said Jervis. "He is fitted with an information-valve that opens inwards. You can pour in as much as you like, but you can't get any out."

      Thorndyke chuckled. "My learned friend is, in the main, correct," he said. "You see, I may be called upon any day to advise on this case, in which event I should feel remarkably foolish if I had already expounded my views in detail. But I should like to hear what you and Jervis make of the case as reported in the newspapers."

      "There now," exclaimed Jervis, "what did I tell you? He wants to suck our brains."

      "As far as my brain is concerned," I said, "the process of suction isn't likely to yield much except a vacuum, so I will resign in favour of you. You are a full-blown lawyer, whereas I am only a simple G.P."

      Jervis filled his pipe with deliberate care and lighted it. Then, blowing a slender stream of smoke into the air, he said:

      "If you want to know what I make of the case from that report, I can tell you in one word—nothing. Every road seems to end in a cul-de-sac."

      "Oh, come!" said Thorndyke, "this is mere laziness. Berkeley wants to witness a display of your forensic wisdom. A learned counsel may be in a fog—he very often is—but he doesn't state the fact baldly; he wraps it up in a decent verbal disguise. Tell us how you arrive at your conclusion. Show us that you have really weighed the facts."

      "Very well," said Jervis, "I will give you a masterly analysis of the case—leading to nothing." He continued to puff at his pipe for a time with slight embarrassment, as I thought—and I fully sympathised with him. Finally he blew a little cloud and commenced:

      "The position appears to be this: Here is a man who is seen to enter a certain house, who is shown into a certain room and shut in. He is not seen to come out, and yet, when the room is next entered, it is found to be empty; and that man is never seen again, alive or dead. That is a pretty tough beginning.

      "Now, it is evident that one of three things must have happened. Either he must have remained in that room, or at least in that house, alive; or he must have died, naturally or otherwise, and his body have been concealed; or he must have left the house unobserved. Let us take the first case. This affair happened nearly two years ago. Now, he couldn't have remained alive in the house for two years. He would have been noticed. The servants, for instance, when cleaning out the rooms, would have observed him."

      Here Thorndyke interposed with an indulgent smile at his junior: "My learned friend is treating the inquiry with unbecoming levity. We accept the conclusion that the man did not remain in the house alive."

      "Very well. Then did he remain in it dead? Apparently not. The report says that as soon as the man was missed, Hurst and the servants together searched the house thoroughly. But there had been no time or opportunity to dispose of the body, whence the only possible conclusion is that the body was not there. Moreover, if we admit the possibility of his having been murdered—for that is what concealment of the body would imply—there is the question: Who could have murdered him? Not the servants, obviously, and as to Hurst—well, of course, we don't know what his relations with the missing man have been—at least, I don't."

      "Neither do I," said Thorndyke. "I know nothing beyond what is in the newspaper report and what Berkeley has told us."

      "Then we know nothing. He may have had a motive for murdering the man or he may not. The point is that he doesn't seem to have had the opportunity. Even if we suppose that he managed to conceal the body temporarily, still there was the final disposal of it. He couldn't have buried it in the garden with the servants about; neither could he have burned it. The only conceivable method by which he could have got rid of it would have been that of cutting it up into fragments and burying the dismembered parts in some secluded spots or dropping them into ponds or rivers. But no remains of the kind have been found, as some of them probably would have been by now, so that there is nothing to support this suggestion; indeed, the idea of murder, in this house at least, seems to be excluded by the search that was made the instant the man was missed.

      "Then to take the third alternative: Did he leave the house unobserved? Well, it is not impossible, but it would be a queer thing to do. He may have been an impulsive or eccentric man. We can't say. We know nothing about him. But two years have elapsed and he has never turned up, so that if he left the house secretly he must have gone into hiding and be hiding still. Of course, he may have been the sort of lunatic who would behave in that manner or he may not. We have no information as to his personal character.

      "Then there is the complication of the scarab that was picked up in the grounds of his brother's house at Woodford. That seems to show that he visited that house at some time. But no one admits having seen him there; and it is uncertain, therefore, whether he went first to his brother's house or to Hurst's. If he was wearing the scarab when he arrived at the Eltham house, he must have left that house unobserved and gone to Woodford; but if he was not wearing it he probably went from Woodford to Eltham and there finally disappeared. As to whether he was or was not wearing the scarab when he was last seen alive by Hurst's housemaid, there is at present no evidence.

      "If he went to his brother's house after his visit to Hurst, the disappearance is more understandable if we don't mind flinging accusations of murder about rather casually; for the disposal of the body would be much less difficult in that case. Apparently no one saw him enter the house, and, if he did enter, it was by a back gate which communicated with the library—a separate building some distance from the house. In that case it would have been physically possible for the Bellinghams to have made away with him. There was plenty of time to dispose of the body unobserved—temporarily, at any rate. Nobody had seen him come to the house, and nobody knew that he was there—if he was there; and apparently no search was made either at the time or afterwards. In fact, if it could be shown that the missing man ever left Hurst's house alive, or that he was wearing the scarab when he arrived there, things would look rather fishy for the Bellinghams—for, of course, the girl must have been in it if the father was. But there's the crux: there is no proof that the man ever did leave Hurst's house alive. And if he didn't—but there! as I said at first, whichever turning you take, you find that it ends in a blind alley."

      "A lame ending to a masterly exposition," was Thorndyke's comment.

      "I know," said Jervis. "But what would you have? There are quite a number of possible solutions, and one of them must be the true one. But how are we to judge which it is? I maintain that until we know something of the parties and the financial and other interests involved we have no data."

      "There," said Thorndyke, "I disagree with you entirely. I maintain that we have ample data. You say that we have no means of judging which of the various possible solutions is the true one; but I think that if you will read the report carefully and thoughtfully you will find that the facts now known to us point clearly to one explanation, and one only. It may not be the true explanation, and I don't suppose it is. But we are now dealing with the matter speculatively, academically, and I contend that our data yield a definite conclusion. What do you say, Berkeley?"

      "I say that it is time for me to be off; the evening consultations begin at half-past six."

      "Well," said Thorndyke, "don't let us keep you from your duties, with poor Barnard currant-picking in the Grecian Isles. But come in and see us again. Drop in when you like, after your work is done. You won't be in our way even if we are busy, which we very seldom are after eight o'clock."

      I thanked Dr. Thorndyke most heartily for making me free of his chambers in this hospitable fashion and took my leave, setting forth homewards by way of Middle Temple Lane and the Embankment; not a very direct route for Fetter Lane, it must be confessed; but our talk had revived my interest in the Bellingham household and put me in a reflective vein.

      From the remarkable conversation that I had overheard it was evident that the plot was thickening. Not that I supposed that these