father who had come back? That, though not impossible, seemed improbable.
Alan stooped quickly, unlaced and stripped off his shoes, and ran out into the hall to the head of the stairs where he looked down and listened. From here the sound of some one moving about came to him distinctly; he could see no light below, but when he ran down to the turn of the stairs, it became plain that there was a very dim and flickering light in the library. He crept on farther down the staircase. His hands were cold and moist from his excitement, and his body was hot and trembling.
Whoever it was that was moving about down-stairs, even if he was not one who had a right to be there, at least felt secure from interruption. He was going with heavy step from window to window; where he found a shade up, he pulled it down brusquely and with a violence which suggested great strength under a nervous strain; a shade, which had been pulled down, flew up, and the man damned it as though it had startled him; then, after an instant, he pulled it down again.
Alan crept still farther down and at last caught sight of him. The man was not his father; he was not a servant; it was equally sure at the same time that he was not any one who had any business to be in the house and that he was not any common house-breaker.
He was a big, young-looking man, with broad shoulders and very evident vigor; Alan guessed his age at thirty-five; he was handsome—he had a straight forehead over daring, deep-set eyes; his nose, lips, and chin were powerfully formed; and he was expensively and
