This was the obvious explanation, but it did not satisfy me. I questioned Sir Joseph about his papers. Had he any document which, for private or public reasons, someone might be anxious to obtain? He said he had not, was inclined to laugh at my question, and proceeded to inform me that he had no family skeleton, had no part in any Government secret, had never been in touch with any mysterious society, and had no papers giving any valuable details of scientific experiments upon which he was engaged. Of course the thieves might have been disturbed, but there were certain points against this idea. No one had moved about the house during the night, so apparently there had been nothing to disturb them. The silver on the floor was scattered, not gathered together ready to take away as I should have expected to find it, and it looked as if it had been thrown aside carelessly, as though it were not what the thieves were in search of; and surely, had they left in a hurry, the bag of money would have been taken. Moreover, the cigarette-ends and the dirty glasses suggested a certain leisurely method of going to work, and men of this kind would not be easily frightened. The cigarette-ends puzzled me. They were of a cheap American brand, had not been taken from Sir Joseph's box, which contained only Turkish ones, and, although they had apparently been thrown down carelessly, there was no ash upon the carpet nor anywhere else. They looked like old ends rather than the remains of cigarettes smoked last night. If my idea were correct, it would mean that they had been put there on purpose to mislead. I examined the three glasses on the dining-room table; there was the stain of lips at the rim of one, but not of the other two. Only one had been drunk out of, and probably a little of the liquid had been emptied out of this into the other two. On inquiry, one of the servants told me that only a very little of the spirit had been taken. She also said there was only one biscuit left in the box last night, and it was there now; therefore a few crumbs from the box must have been purposely scattered on the tablecloth. This was the story I told to Professor Quarles and his granddaughter. I went to him at once, feeling that the case was just one of those in which his theoretical method was likely to be useful. By doing so I certainly saved one valuable life, possibly more than one. That he was interested was shown by our adjournment to the empty room, and he did not ask a question until I had finished my story. "What is the opinion you have formed about it, Wigan?" he said. "I think there was only one burglar, but for some reason he thought it important that it should be believed there were more." "A very important point, and a reasonable conclusion, I fancy," said Quarles. "If you are right, it narrows the sphere of inquiry--narrows it very much, taken with the other facts of the case."