"The blind was not down in your room, and I could see Miss Harrison sitting there reading by the table. It was quarter-past ten when she closed her book, fastened the shutters, and retired.
"I heard her shut the door, and felt quite sure that she had turned the key in the lock."
"The key!" ejaculated Phelps.
"Yes; I had given Miss Harrison instructions to lock the door on the outside and take the key with her when she went to bed. She carried out every one of my injunctions to the letter, and certainly without her cooperation you would not have that paper in you coat-pocket. She departed then and the lights went out, and I was left squatting in the rhododendron-bush.
"The night was fine, but still it was a very weary vigil. Of course it has the sort of excitement about it that the sportsman feels when he lies beside the water-course and waits for the big game. It was very long, though—almost as long, Watson, as when you and I waited in that deadly room when we looked into the little problem of the Speckled Band. There was a church-clock down at Woking which struck the quarters, and I thought more than once that it had stopped. At last however about two in the morning, I suddenly heard the gentle sound of a bolt being pushed back and the creaking of a key. A moment later the servants' door was opened, and Mr. Joseph Harrison stepped out into the moonlight."
"Joseph!" ejaculated Phelps.
"He was bare-headed, but he had a black coat thrown over his shoulder so that he could conceal his face in an instant if there were any alarm. He walked on tiptoe under the shadow of the wall, and when he reached the window he worked a long-bladed knife through the sash and pushed back the catch. Then he flung open the window, and putting his knife through the crack in the shutters, he thrust the bar up and swung them open.
