It must have been about an hour after this that the front door bell rang. He had been writing slackly, and with intervals of abstraction, since the shots. He sat listening. He heard the servant answer the door, and waited for her feet on the staircase, but she did not come. “Wonder what that was,” said Dr. Kemp.

He tried to resume his work, failed, got up, went downstairs from his study to the landing, rang, and called over the balustrade to the housemaid as she appeared in the hall below. “Was that a letter?” he asked.

“Only a runaway ring, sir,” she answered.

“I’m restless tonight,” he said to himself. He went back to his study, and this time attacked his work resolutely. In a little while he was hard at work again, and the only sounds in the room were the ticking of the clock and the subdued shrillness of his quill, hurrying in the very centre of the circle of light his lampshade threw on his table.