One of them knocked at his door, and asked if she should come in and close his windows.
He opened the door, thanked her, and said he would attend to it himself. As he closed the door and stepped back into the room, he stood upon something and there was a little crash. Thinking it might be glass, he lit a candle and looked for the broken object, whatever it might be.
It was Alma's engagement ring, broken in twain. It had slipped from her nerveless finger when they took her to her room. With a gesture of impatience, he picked up the fragments, and threw them, diamond and all, out of the window into the garden below.
Then for another hour he sat alone in the darkness of his room, watchful and patient. He drew up the curtain toward Alma's room. There was a light there, and he sat gazing at her white curtain till the light was extinguished. The other lights were all put out one after the other, and then it became very still.
The clock struck ten. The gathering storm climbed higher up the western sky. The lightning flashed brighter and brighter. There was a sigh in the tree tops as if the air stirred uneasily.
Suddenly there was another light. Mr. Belford's curtain was brightly illuminated by his candle. Elmer moved his chair so that he could watch the window, and waited patiently till the light was put out. Then he saw the curtain raised and the window drawn down.
"All right, my boy! That's just what I wanted. Nemesis has a clear road, and her shadowy sword shall reach you. Now for the closed circuit alarm."
He silently pulled off his shoes, and then, with the tread of a cat, he felt about his room till he found on the table two delicate coils of fine insulated wire, and a couple of tacks. Carefully opening the door, he crept down stairs and through the hall to the door of the library. The door was closed, and kneeling down on the mat he pushed a tack into the door near the jamb and stuck the other in the door post. From one to another he stretched a bit of insulated wire. Then, aided by the glare of the flashes of lightning, that had now grown bright and frequent, he laid the wires under the mat and along the floor to the foot of the stairs. Then in his stockinged feet he crept upward, dropping the wires over into the well of the stairway as he went. In a moment or two the wires were traced along the floor of the upper entry and under the door into his room. Here they were secured to a small battery, and connected with a tiny electric bell that stood on the mantle shelf. To stifle its sound in case it rang, he threw his straw hat over the bell, and then he felt sure that at least one part of his work was done.