I stopped on reaching the inn, and was on the point of entering and taking up my position at once, when it occurred to me that this would be a false move. It was possible that Sam would not take my departure for granted so readily as I assumed. It was Sam's way to do a thing thoroughly, and the probability was that, if he did not actually come to see me off, he would at least make inquiries at the station to find out if I had gone. I walked on. He was not at the station. Nor did he arrive in the cart with my trunk. But I was resolved to risk nothing. I bought a ticket for London, and boarded the London train. It had been my intention to leave it at Guildford and catch an afternoon train back to Stanstead; but it seemed to me, on reflection, that this was unnecessary. There was no likelihood of Sam making any move in the matter of the Nugget until the following day. I could take my time about returning. I spent the night in London, and arrived at Sanstead by an early morning train with a suit-case containing, among other things, a Browning pistol. I was a little ashamed of this purchase. To the Buck MacGinnis type of man, I suppose, a pistol is as commonplace a possession as a pair of shoes, but I blushed as I entered the gun-shop. If it had been Buck with whom I was about to deal, I should have felt less self-conscious. But there was something about Sam which made pistols ridiculous. My first act, after engaging a room at the inn and leaving my suit-case, was to walk to the school. Before doing anything else, I felt I must see Audrey and tell her the facts in the case of Smooth Sam. If she were on her guard, my assistance might not be needed. But her present state of trust in him was fatal. A school, when the boys are away, is a lonely place. The deserted air of the grounds, as I slipped cautiously through the trees, was almost eerie. A stillness brooded over everything, as if the place had been laid under a spell. Never before had I been so impressed with the isolation of Sanstead House. Anything might happen in this lonely spot, and the world would go on its way in ignorance. It was with quite distinct relief that, as I drew nearer the house, I caught sight of the wire of the telephone among the trees above my head. It had a practical, comforting look. A tradesman's cart rattled up the drive and disappeared round the side of the house. This reminder, also, of the outside world was pleasant. But I could not rid myself of the feeling that the atmosphere of the place was sinister. I attributed it to the fact that I was a spy in an enemy's country. I had to see without being seen. I did not imagine that Johnson, grocer, who had just passed in his cart, found anything wrong with the atmosphere. It was created for me by my own furtive attitude.