“ ‘I cannot understand how it could have happened—but—you had better come up and have a look at the safe. The key must have been abstracted from my bedside, the safe opened, and the keys replaced—all while I was fast asleep. Though I had no occasion to look into the safe until just now, I should have discovered my loss before going to business, for I intended to take the diamonds away with me—’
“The detective and the inspector went up to have a look at the safe. The lock had in no way been tampered with—it had been opened with its own key. The detective spoke of chloroform, but Mr. Shipman declared that when he woke in the morning at about half-past seven there was no smell of chloroform in the room. However, the proceedings of the daring thief certainly pointed to the use of an anaesthetic. An examination of the premises brought to light the fact that the burglar had, as in Mr. Knopf’s house, used the glass-panelled door from the garden as a means of entrance, but in this instance he had carefully cut out the pane of glass with a diamond, slipped the bolts, turned the key, and walked in.
“ ‘Which among your servants knew that you had the diamonds in your house last night, Mr. Shipman?’ asked the detective.
“ ‘Not one, I should say,’ replied the jeweller, ‘though, perhaps, the parlourmaid, whilst waiting at table, may have heard me and Mr. Knopf discussing our bargain.’
“ ‘Would you object to my searching all your servants’ boxes?’
“ ‘Certainly not. They would not object, either, I am sure. They are perfectly honest.’
“The searching of servants’ belongings is invariably a useless proceeding,” added the man in the corner, with a shrug of the shoulders. “No one, not even a latter-day domestic, would be fool enough to keep stolen property in the house. However, the usual farce was gone through, with more or less protest on the part of Mr. Shipman’s servants, and with the usual result.
“The jeweller could give no further information; the detective and inspector, to do them justice, did their work of investigation minutely and, what is more, intelligently. It seemed evident, from their deductions, that the burglar had commenced proceedings on No. 26, Phillimore Terrace, and had then gone on, probably climbing over the garden walls between the houses to No. 22, where he was almost caught in the act by Robertson. The facts were simple enough, but the mystery remained as to the individual who had managed to glean the information of the presence of the diamonds in both the houses, and the means which he had adopted to get that information. It was obvious that the thief or thieves knew more about Mr. Knopf’s affairs than Mr. Shipman’s, since they had known how to use Mr. Emile Knopf’s name in order to get his brother out of the way.
“It was now nearly ten o’clock, and the detectives, having taken leave of Mr. Shipman, went back to No. 22, in order to ascertain whether Mr. Knopf had come back; the door was opened by the old charwoman, who said that her master had returned, and was having some breakfast in the dining-room.
“Mr. Ferdinand Knopf was a middle-aged man, with sallow complexion, black hair and beard, of obviously Hebrew extraction. He spoke with a marked foreign accent, but very courteously, to the two officials, who, he begged, would excuse him if he went on with his breakfast.
“ ‘I was fully prepared to hear the bad news,’ he explained, ‘which my man Robertson told me when I arrived. The letter I got last night was a bogus one; there is no such person as J. Collins, M.D. My brother had never felt better in his life. You will, I am sure, very soon trace the cunning writer of that epistle—ah! but I was in a rage, I can tell you, when I got to the Metropole at Brighton, and found that Emile, my brother, had never heard of any Doctor Collins.
“ ‘The last train to town had gone, although I raced back to the station as hard as I could. Poor old Robertson, he has a terrible cold. Ah yes! my loss! it is for me a very serious one; if I had not made that lucky bargain with Mr. Shipman last night I should, perhaps, at this moment be a ruined man.
“ ‘The stones I had yesterday were, firstly, some magnificent Brazilians; these I sold to Mr. Shipman mostly. Then I had some very good Cape diamonds—all gone; and some quite special Parisians, of wonderful work and finish, entrusted to me for sale by a great French house. I tell you, sir, my loss will be nearly £10,000 altogether. I sell on commission, and, of course, have to make good the loss.’
“He was evidently trying to bear up manfully, and as a business man should, under his sad fate. He refused in any way to attach the slightest blame to his old and faithful servant Robertson, who had caught, perhaps, his death of cold in his zeal for his absent master. As for any hint of suspicion falling even remotely upon the man, the very idea appeared to Mr. Knopf absolutely preposterous.
“With regard to the old charwoman, Mr. Knopf certainly knew nothing about her, beyond the fact that she had been recommended to him by one of the tradespeople in the neighbourhood, and seemed perfectly honest, respectable, and sober.
“About the tramp Mr. Knopf knew still less, nor could he imagine how he, or in fact anybody else, could possibly know that he happened to have diamonds in his house that night.
“This certainly seemed the great hitch in the case.
“Mr. Ferdinand Knopf, at the instance of the police, later on went to the station and had a look at the suspected tramp. He declared that he had never set eyes
