"That's his bedroom," Holmes whispered. "This door opens straight into the study. It would suit us best, but it is bolted as well as locked, and we should make too much noise getting in. Come round here. There's a greenhouse which opens into the drawing-room." The place was locked, but Holmes removed a circle of glass and turned the key from the inside. An instant afterwards he had closed the door behind us, and we had become felons in the eyes of the law. The thick, warm air of the conservatory and the rich, choking fragrance of exotic plants took us by the throat. He seized my hand in the darkness and led me swiftly past banks of shrubs which brushed against our faces. Holmes had remarkable powers, carefully cultivated, of seeing in the dark. Still holding my hand in one of his he opened a door, and I was vaguely conscious that we had entered a large room in which a cigar had been smoked not long before. He felt his way among the furniture, opened another door, and closed it behind us. Putting out my hand I felt several coats hanging from the wall, and I understood that I was in a passage. We passed along it, and Holmes very gently opened a door upon the right-hand side. Something rushed out at us and my heart sprang into my mouth, but I could have laughed when I realized that it was the cat. A fire was burning in this new room, and again the air was heavy with tobacco smoke. Holmes entered on tip-toe, waited for me to follow, and then very gently closed the door. We were in Milverton's study, and a _portière_ at the farther side showed the entrance to his bedroom. It was a good fire, and the room was illuminated by it. Near the door I saw the gleam of an electric switch, but it was unnecessary, even if it had been safe, to turn it on. At one side of the fireplace was a heavy curtain, which covered the bay window we had seen from outside. On the other side was the door which communicated with the veranda. A desk stood in the centre, with a turning chair of shining red leather. Opposite was a large bookcase, with a marble bust of Athene on the top. In the corner between the bookcase and the wall there stood a tall green safe, the firelight flashing back from the polished brass knobs upon its face. Holmes stole across and looked at it. Then he crept to the door of the bedroom, and stood with slanting head listening intently. No sound came from within. Meanwhile it had struck me that it would be wise to secure our retreat through the outer door, so I examined it. To my amazement it was neither locked nor bolted! I touched Holmes on the arm, and he turned his masked face in that direction. I saw him start, and he was evidently as surprised as I. "I don't like it," he whispered, putting his lips to my very ear. "I can't quite make it out. Anyhow, we have no time to lose." "Can I do anything?"