“What’s he up to?” mused Tom. “No good, that’s sure. He wouldn’t sneak along like that if he were on the level.”
Through Tom’s mind flashed remembrances of times when attempts had been made by enemies of himself and his father to fire the plant. To prevent this, and to keep strangers away, a high fence had been erected around the buildings. This fence was protected by wires on the plan of a burglar alarm, so that, no matter at what point the barrier was climbed, a bell would ring in the main office and on an indicator would appear a number to show at what part of the fence an attempt was being made to scale it.
An effort to break down the barrier, or burrow beneath it, would also sound the alarm in like manner. So Tom had no fear that the sneaking stranger, crouching along in the darkness, could get into the midst of the buildings without notice being given.
“But what’s his game?” thought Tom.
Almost at the instant he asked himself this question he saw the man crawl behind a clump of bushes. In the natural course of events the man should have appeared on the other side of the clump. But he did nothing of the sort.
“He may be hiding there,” mused Tom. “Perhaps waiting for a confederate. I’ll just have a closer look at this!”
He advanced boldly toward the bushes. There was nothing between him and the shrubbery, and it was still light enough to see fairly well. Besides, Tom had extraordinarily good eyes. His astonishment can be imagined when, on reaching the bush off which he had not taken his gaze and behind which he had seen the crawling man disappear he found—no one!
“That’s the queerest thing I’ve seen yet!” exclaimed Tom, rubbing his organs of vision.
Standing beside the bush which came about to his shoulders, Tom looked on all sides of it. There was no hollow in the ground, as far as he could make out, no depression and no other clumps of shrubbery and no boulders behind which a man might be hidden. Some distance away there were all of these things in profusion, for the land was wild and uncultivated outside the plant fence. But there was not a hole, boulder, or bush near enough to the one beside which Tom stood to have enabled a man to gain their protection while the young inventor was watching.
“He just crawled back of his bush and then vanished!” said Tom, in a half whisper to himself. “If only I had a flashlight now——” He was startled by hearing some one walking toward him out of the darkness which was now quite dense. “Here he comes!” thought Tom. “Appearing as queerly as he disappeared. Or else it’s one of his confederates.” He could see no one, and his hand clutched something in his pocket that might be used in case he was attacked.