Mr. Corbeck seemed to go almost off his head at the recovery of the lamps. He took them up one by one and looked them all over tenderly, as though they were things that he loved. In his delight and excitement he breathed so hard that it seemed almost like a cat purring. Sergeant Daw said quietly, his voice breaking the silence like a discord in a melody:  
"Are you quite sure those lamps are the ones you had, and that were stolen?"
 
His answer was in an indignant tone: "Sure! Of course I'm sure. There isn't another set of lamps like these in the world!"
 
"So far as you know!" The Detective's words were smooth enough, but his manner was so exasperating that I was sure he had some motive in it; so I waited in silence. He went on:
 
"Of course there may be some in the British Museum; or Mr. Trelawny may have had these already. There's nothing new under the sun, you know, Mr. Corbeck; not even in Egypt. These may be the originals, and yours may have been the copies. Are there any points by which you can identify these as yours?"
 
Mr. Corbeck was really angry by this time. He forgot his reserve; and in his indignation poured forth a torrent of almost incoherent, but enlightening, broken sentences:
 
"Identify! Copies of them! British Museum! Rot! Perhaps they keep a set in Scotland Yard for teaching idiot policemen Egyptology! Do I know them? When I have carried them about my body, in the desert, for three months; and lay awake night after night to watch them! When I have looked them over with a magnifying-glass, hour after hour, till my eyes ached; till every tiny blotch, and chip, and dinge became as familiar to me as his chart to a captain; as familiar as they doubtless have been all the time to every thick-headed area-prowler within the bounds of mortality. See here, young man, look at these!" He ranged the lamps in a row on the top of the cabinet. "Did you ever see a set of lamps of these shapes—of any one of these shapes? Look at these dominant figures on them! Did you ever see so complete a set—even in Scotland Yard; even in Bow Street? Look! one on each, the seven forms of Hathor. Look at that figure of the Ka of a Princess of the Two Egypts, standing between Ra and Osiris in the Boat of the Dead, with the Eye of Sleep, supported on legs, bending before her; and Harmochis rising in the north. Will you find that in the British Museum—or Bow Street? Or perhaps your studies in the Gizeh Museum, or the Fitzwilliam, or Paris, or Leyden, or Berlin, have shown you that the episode is common in hieroglyphics; and that this is only a copy. Perhaps you can tell me what that figure of Ptah-Seker-Ausar holding the Tet wrapped in the Sceptre of Papyrus means? Did you ever see it before; even in the British Museum, or Gizeh, or Scotland Yard?"
 
He broke off suddenly; and then went on in quite a different way:
 
"Look here! it seems to me that the thick-headed idiot is myself! I beg your pardon, old fellow, for my rudeness. I quite lost my temper at the suggestion that I do not know these lamps. You don't mind, do you?" The Detective answered heartily:
 
"Lord, sir, not I. I like to see folks angry when I am dealing with them, whether they are on my side or the other. It is when people are angry that you learn the truth from them. I keep cool; that is my trade! Do you know, you have told me more about those lamps in the past two minutes than when you filled me up with details of how to identify them."
 
Mr. Corbeck grunted; he was not pleased at having given himself away. All at once he turned to me and said in his natural way:
 
"Now tell me how you got them back?" I was so surprised that I said without thinking:
 
"We didn't get them back!" The traveller laughed openly.
 
"What on earth do you mean?" he asked. "You didn't get them back! Why, there they are before your eyes! We found you looking at them when we came in." By this time I had recovered my surprise and had my wits about me.
 
"Why, that's just it," I said. "We had only come across them, by accident, that very moment!"
 
Mr. Corbeck drew back and looked hard at Miss Trelawny and myself; turning his eyes from one to the other as he asked:
 
"Do you mean to tell me that no one brought them here; that you found them in that drawer? That, so to speak, no one at all brought them back?"
 
"I suppose someone must have brought them here; they couldn't have come of their own accord. But who it was, or when, or how, neither of us knows. We shall have to make inquiry, and see if any of the servants know anything of it."
 
We all stood silent for several seconds. It seemed a long time. The first to speak was the Detective, who said in an unconscious way:
 
"Well, I'm damned! I beg your pardon, miss!" Then his mouth shut like a steel trap.
 
We called up the servants, one by one, and asked them if they knew anything of some articles placed in a drawer in the boudoir; but none of them could throw any light on the circumstance. We did not tell them what the articles were; or let them see them.
 
Mr. Corbeck packed the lamps in cotton wool, and placed them in a tin box. This, I may mention incidentally, was then brought up to the detectives' room, where one of the men stood guard over them with a revolver the whole night. Next day we got a small safe into the house, and placed them in it. There were two different keys. One of them I kept myself; the other I placed in my drawer in the Safe Deposit vault. We were all determined that the lamps should not be lost again.
 
About an hour after we had found the lamps, Doctor Winchester arrived. He had a large parcel with him, which, when unwrapped, proved to be the mummy of a cat. With Miss Trelawny's permission he placed this in the boudoir; and Silvio was brought close to it. To the surprise of us all, however, except perhaps Doctor Winchester, he did not manifest the least annoyance; he took no notice of it whatever. He stood on the table close beside it, purring loudly. Then, following out his plan, the Doctor brought him into Mr. Trelawny's room, we all following. Doctor Winchester was excited; Miss Trelawny anxious. I was more than interested myself, for I began to have a glimmering of the Doctor's idea. The Detective was calmly and coldly superior; but Mr. Corbeck, who was an enthusiast, was full of eager curiosity.
 
The moment Doctor Winchester got into the room, Silvio began to mew and wriggle; and jumping out of his arms, ran over to the cat mummy and began to scratch angrily at it. Miss Trelawny had some difficulty in taking him away; but so soon as he was out of the room he became quiet. When she came back there was a clamour of comments:
 
"I thought so!" from the Doctor.
 
"What can it mean?" from Miss Trelawny.
 
"That's a very strange thing!" from Mr. Corbeck.
 
"Odd! but it doesn't prove anything!" from the Detective.
 
"I suspend my judgment!" from myself, thinking it advisable to say something.
 
Then by common consent we dropped the theme—for the present.
 
In my room that evening I was making some notes of what had happened, when there came a low tap on the door. In obedience to my summons Sergeant Daw came in, carefully closing the door behind him.
 
"Well, Sergeant," said I, "sit down. What is it?"
 
"I wanted to speak to you, sir, about those lamps." I nodded and waited: he went on: "You know that that room where they were found opens directly into the room where Miss Trelawny slept last night?"
 
"Yes."
 
"During the night a window somewhere in that part of the house was opened, and shut again. I heard it, and took a look round; but I could see no sign of anything."
 
"Yes, I know that!" I said; "I heard a window moved myself."
 
"Does nothing strike you as strange about it, sir?"
 
"Strange!" I said; "Strange! why it's all the most bewildering, maddening thing I have ever encountered. It is all so strange that one seems to wonder, and simply waits for what will happen next. But what do you mean by strange?"
 
The Detective paused, as if choosing his words to begin; and then said deliberately:
 
"You see, I am not one who believes in magic and such things. I am for facts all the time; and I always find in the long-run that there is a reason and a cause for everything. This new gentleman says these things were stolen out of his room in the hotel. The lamps, I take it from some things he has said, really belong to Mr. Trelawny. His daughter, the lady of the house, having left the room she usually occupies, sleeps that night on the ground floor. A window is heard to open and shut during the night. When we, who have been during the day trying to find a clue to the robbery, come to the house, we find the stolen goods in a room close to where she slept, and opening out of it!"
 
He stopped. I felt that same sense of pain and apprehension, which I had experienced when he had spoken to me before, creeping, or rather rushing, over me again. I had to face the matter out, however. My relations with her, and the feeling toward her which I now knew full well meant a very deep love and devotion, demanded so much. I said as calmly as I could, for I knew the keen eyes of the skilful investigator were on me:
 
"And the inference?"
 
He answered with the cool audacity of conviction:
 
"The inference to me is that there was no robbery at all. The goods were taken by someone to this house, where they were received through a window on the ground floor. They were placed in the cabinet, ready to be discovered when the proper time should come!"
 
Somehow I felt relieved; the assumption was too monstrous. I did not want, however, my relief to be apparent, so I answered as gravely as I could:
 
"And who do you suppose brought them to the house?"
 
"I keep my mind open as to that. Possibly Mr. Corbeck himself; the matter might be too risky to trust to a third party."
 
"Then the natural extension of your inference is that Mr. Corbeck is a liar and a fraud; and that he is in conspiracy with Miss Trelawny to deceive someone or other about those lamps."
 
"Those are harsh words, Mr. Ross. They're so plain-spoken that they bring a man up standing, and make new doubts for him. But I have to go where my reason points. It may be that there is another party than Miss Trelawny in it. Indeed, if it hadn't been for the other matter that set me thinking and bred doubts of its own about her, I wouldn't dream of mixing her up in this. But I'm safe on Corbeck. Whoever else is in it, he is! The things couldn't have been taken without his connivance—if what he says is true. If it isn't—well! he is a liar anyhow. I would think it a bad job to have him stay in the house with so many valuables, only that it will give me and my mate a chance of watching him. We'll keep a pretty good look-out, too, I tell you. He's up in my room now, guarding those lamps; but Johnny Wright is there too. I go on before he comes off; so there won't be much chance of another house-breaking. Of course, Mr. Ross, all this, too, is between you and me."
 
"Quite so! You may depend on my silence!" I said; and he went away to keep a close eye on the Egyptologist.
 
It seemed as though all my painful experiences were to go in pairs, and that the sequence of the previous day was to be repeated; for before long I had another private visit from Doctor Winchester who had now paid his nightly visit to his patient and was on his way home. He took the seat which I proffered and began at once:
 
"This is a strange affair altogether. Miss Trelawny has just been telling me about the stolen lamps, and of the finding of them in the Napoleon cabinet. It would seem to be another complication of the mystery; and yet, do you know, it is a relief to me. I have exhausted all human and natural possibilities of the case, and am beginning to fall back on superhuman and supernatural possibilities. Here are such strange things that, if I am not going mad, I think we must have a solution before long. I wonder if I might ask some questions and some help from Mr. Corbeck, without making further complications and embarrassing us. He seems to know an amazing amount regarding Egypt and all relating to it. Perhaps he wouldn't mind translating a little bit of hieroglyphic. It is child's play to him. What do you think?"
 
When I had thought the matter over a few seconds I spoke. We wanted all the help we could get. For myself, I had perfect confidence............