“What was it you thought you saw?” he asked bluntly. “What are you looking for?”

“I am not satisfied that I saw anything,” answered Professor Ravenden evasively. “Imagination is a powerful factor, when the eye must accomplish its search in the instantaneous revelation of a lightning flash. As for what I am seeking, you heard as much as I. I thank you for your help, and, if you will pardon me, I will bid you good-night here, as I wish to make a few notes before retiring.”

Leaving the professor busied by candle light at the desk in the main room, Dick Colton cautiously tiptoed up the stairs. At the top he stopped dead. From an open door at the end of the hall issued a shaft of light. In the soft glow stood a girl. Her face was toward Colton. Her eyes met his, but un-seeingly, for he was in the shadow, and her vision was dazzled by the light she had just made. Her face was softly flushed with sleep and her dark eyes were liquid under the heavy lids. She was dressed in some filmy, fluffy garment, the like of which Colton did not know existed. Nor had he realised that such creatures as this girl who had so suddenly stepped into his world, existed. He held his breath lest the sweetest, softest, most radiant vision that had ever met his eyes, should vanish. The Vision pushed a mass of heavy black hair back from its forehead, and spoke.

“Father,” it said.

“Father,” she said again. Then with a note of petulance in the soft, rippling voice. “Oh, Dad, you’re not going out again.”

“I beg your pardon,” said Colton in a husky voice that belonged to someone whom he didn’t know. “Your father is downstairs. I’ll call him.” But the Vision had flashed out of his range. The light was shut out, and all that remained to him was the echo of a soft, dismayed, frightened little exclamation.

Having delivered the message to Professor Ravenden, and received his absent-minded, “In a minute,” the insomniac returned to his room. Strangely enough, it was while he was striving to fix on the photographic lens of his brain every light and shadow of that radiant girl-figure, that the solution of the strange noise came, unsought, to him. He went to the foot of the stairs to tell the professor, who was still writing.

“I think I know what the sound was that we heard, Professor Ravenden,” he said. “It was very like the rubbing of one wire on another.”

“Very like,” agreed the professor.

“Probably a telegraph or telephone wire, broken and grating in the gale, against the others.”