‘I thought of that first of all, monsieur, but I dismissed it as impossible for the following reasons. First, if she was murdered on Saturday night, what was done with the body? It could not have been put into the cask in the study, as I had thought at first, for that was full. The statue was not unpacked till two nights later, on Monday. We know, indeed, it was not put into the cask, for that was returned direct to Messrs. Dupierre’s and found to be empty. Secondly, it could not have been hidden anywhere else in the house, for François and Suzanne made a thorough search on the Sunday, and the corpse would have been too big a thing for them to have overlooked. Further, if she was murdered in the house, either Felix, Boirac, or some third person or persons must have done it. Felix could hardly be the man, as I do not see how he could have removed the body without a confederate, and we have not found such. Boirac would perhaps have had more chances of disposing of the body, though I do not see how, but he had a complete alibi. Lastly, I felt strongly that François, the butler, was to be believed. I could not imagine him party to the murder, and I did not see how it could have been done at the time you suggest without his knowledge.’ ‘That certainly seems probable. In fact, when you add it to M. Lefarge’s point that the body must have been put into the cask in London, it seems to me almost conclusive.’ ‘I also feel sure it could not have been done then,’ observed Lefarge, ‘though I don’t agree with Mr. Burnley that Boirac’s alibi is good.’ ‘Well now, I was rather inclined to accept the alibi,’ said M. Chauvet. ‘What part of it do you consider doubtful, Lefarge?’ ‘All of it from the time Boirac left the works. We don’t know whether that American exists at all. As far as I can see, the whole thing may be an invention.’ ‘That is quite true,’ admitted the Chief, ‘but it didn’t seem to me so very important. The crucial point, to my mind, is the hour at which Boirac says he returned home--a few minutes past one. That is confirmed by François and by Suzanne, and I think we may accept their statement. But we have a further rather convincing incident. You may recollect Boirac stated that when he was halfway home from the Gare Quai d’Orsay it began to rain? You very properly tried to check even so small a point by asking François if his master’s coat was wet. He replied that it was. Now, I made inquiries, and I find that night was perfectly fine till almost one o’clock, when a thick, wetting rain began to fall. We know, therefore, quite definitely that Boirac was out until the time he said. Therefore he could not have done the deed before 1.15. Also, we know that he could not have done it after that hour, because the lady was gone, and also the butler and maid were about. Therefore, if Boirac did it at all, it must have been after that night.’