What could his father's intention be when he reached the Hall? Was it merely that he wished to spy and prowl, or did he intend to call up the master and enter into some discussion as to his wrongs? Or was it possible that some blacker and more sinister design lay beneath his strange doings? Robert thought suddenly of the razor-strop, and gasped with horror. What had the old man been doing with that? He quickened his pace to a run, and hurried on until he found himself at the door of the Hall.
Thank God! all was quiet there. He stood by the big silent door and listened intently. There was nothing to be heard save the wind and the rain. Where, then, could his father be? If he wished to enter the Hall he would not attempt to do so by one of the windows, for had he not been present when Raffles Haw had shown them the precautions which he had taken? But then a sudden thought struck Robert. There was one window which was left unguarded. Haw had been imprudent enough to tell them so. It was the middle window of the laboratory. If he remembered it so clearly, of course his father would remember it too. There was the point of danger.
The moment that he had come round the corner of the building he found that his surmise had been correct. An electric lamp burned in the laboratory, and the silver squares of the three large windows stood out clear and bright in the darkness. The centre one had been thrown open, and, even as he gazed, Robert saw a dark monkey-like figure spring up on to the sill, and vanish into the room beyond. For a moment only it outlined itself against the brilliant light beyond, but in that moment Robert had space to see that it was indeed his father. On tiptoe he crossed the intervening space, and peeped in through the open window. It was a singular spectacle which met his eyes.
There stood upon the glass table some half-dozen large ingots of gold, which had been made the night before, but which had not been removed to the treasure-house. On these the old man had thrown himself, as one who enters into his rightful inheritance. He lay across the table, his arms clasping the bars of gold, his cheek pressed against them, crooning and muttering to himself. Under the clear, still light, amid the giant wheels and strange engines, that one little dark figure clutching and clinging to the ingots had in it something both weird and piteous.
For five minutes or more Robert stood in the darkness amid the rain, looking in at this strange sight, while his father hardly moved save to cuddle closer to the gold, and to pat it with his thin hands. Robert was still uncertain what he should do, when his eyes wandered from the central figure and fell on something else which made him give a little cry of astonishment--a cry which was drowned amid the howling of the gale.
Raffles Haw was standing in the corner of the room. Where he had come from Robert could not say, but he was certain that he had not been there when he first looked in. He stood silent, wrapped in some long, dark dressing-gown, his arms folded, and a bitter smile upon his pale face. Old McIntyre seemed to see him at almost the same moment, for he snarled out an oath, and clutched still closer at his treasure, looking slantwise at the master of the house with furtive, treacherous eyes.
"And it has really come to this!" said Haw at last, taking a step forward. "You have actually fallen so low, Mr. McIntyre, as to steal into my house at night like a common burglar. You knew that this window was unguarded. I remember telling you as much. But I did not tell you what other means I had adopted by which I might be warned if knaves made an entrance. But that you should have come! You!"
The old gunmaker made no attempt to justify himself, but he muttered some few hoarse words, and continued to cling to the treasure.
"I love your daughter," said Raffles Haw, "and for her sake I will not expose you. Your hideous and infamous secret shall be safe with me. No ear shall hear what has happened this night.