"I took it up and examined it. It was of the same peculiar tint, and the same thickness. But then the impossibility of the thing obtruded itself upon me. How could my hair have been locked in the drawer? With trembling hands I undid my trunk, turned out the contents, and drew from the bottom my own hair. I laid the two tresses together, and I assure you that they were identical. Was it not extraordinary? Puzzle as I would, I could make nothing at all of what it meant. I returned the strange hair to the drawer, and I said nothing of the matter to the Rucastles as I felt that I had put myself in the wrong by opening a drawer which they had locked.

"I am naturally observant, as you may have remarked, Mr. Holmes, and I soon had a pretty good plan of the whole house in my head. There was one wing, however, which appeared not to be inhabited at all. A door which faced that which led into the quarters of the Tollers opened into this suite, but it was invariably locked. One day, however, as I ascended the stair, I met Mr. Rucastle coming out through this door, his keys in his hand, and a look on his face which made him a very different person to the round, jovial man to whom I was accustomed. His cheeks were red, his brow was all crinkled with anger, and the veins stood out at his temples with passion. He locked the door and hurried past me without a word or a look.

"This aroused my curiosity; so when I went out for a walk in the grounds with my charge, I strolled round to the side from which I could see the windows of this part of the house. There were four of them in a row, three of which were simply dirty, while the fourth was shuttered up. They were evidently all deserted. As I strolled up and down, glancing at them occasionally, Mr. Rucastle came out to me, looking as merry and jovial as ever.

"'Ah!' said he, 'you must not think me rude if I passed you without a word, my dear young lady. I was preoccupied with business matters.'

"I assured him that I was not offended. 'By the way,' said I, 'you seem to have quite a suite of spare rooms up there, and one of them has the shutters up.'

"He looked surprised and, as it seemed to me, a little startled at my remark. "'Photography is one of my hobbies,' said he. 'I have made my dark room up there. But, dear me! what an observant young lady we have come upon. Who would have believed it? Who would have ever believed it?' He spoke in a jesting tone, but there was no jest in his eyes as he looked at me. I read suspicion there and annoyance, but no jest.

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