“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 L10,000 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.