‘I’ll make inquiries. Excuse me a moment.’

The manager was gone a considerable time. When he returned after more than half an hour he shook his head.

‘I can’t find out,’ he said. ‘I’ve asked every one I can think of, but no one knows. One of the hall porters was on duty that evening up till midnight, and he is positive he did not come in before that hour. This is a very reliable man and I think you may take what he says as accurate. The man who relieved him is off duty at present, as is also the night lift boy, and the chamber-maid on late duty in M. Felix’s corridor, but I will interview them later and let you know the result. I presume that will be time enough?’

‘Certainly,’ and with thanks Burnley withdrew.

He lunched alone, greatly regretting M. Lefarge’s absence, and then called up the Sûreté again. M. Chauvet wanted to speak to him, he was told, and soon he was switched through to the great man’s private room.

‘There has been another wire from London,’ said the distant voice, ‘and it seems a cask was sent by passenger train from Charing Cross to Paris via Dover and Calais on Thursday week, the 1st of April, consigned to M. Jaques de Belleville, from Raymond Lemaître. I think you had better go to the Gare du Nord and find out something about it.’

‘How many more casks are we going to find?’ thought the puzzled Burnley, as he drove in the direction of the station. As the taxi slipped through the crowded streets he again took stock of his position, and had to admit himself completely at sea. The information they gained—and there was certainly plenty coming in—did not work into a connected whole, but each fresh piece of evidence seemed, if not actually to conflict with some other, at least to add to the tangle to be straightened out. When in England he had thought Felix innocent. Now he was beginning to doubt this conclusion.

He had not Lefarge’s card to show to the clerk in the parcels office, but fortunately the latter remembered him as having been with the French detective on their previous call.

‘Yes,’ he said, when Burnley had explained, in his somewhat halting French, what he wanted, ‘I can tell you about that cask.’ He turned up some papers.

‘Here we are,’ he said. ‘The cask came off the Calais boat train at 5.45 p.m. on Thursday week, the 1st instant. It was consigned from Charing Cross to M. Jaques de Belleville, to be kept here until called for. He claimed it personally almost immediately after, and removed it on a cart he had brought.’