Hugh gave a prearranged signal and received a soft reply.

“The Chief is over there in that dense shadow,” he whispered to the rest. “We must slip along and join him. First, Tom, here, can go, and drop down when he finds himself in the dark spot. Then Alec will follow, and in regular order Buck, Ralph, Jack, Bud and Sam are to imitate him. I’ll fetch up the rear. Make a move, Tom.”

They were all on their mettle, and besides, had the reputation of being clever scouts, well versed in most of the secrets of woodcraft. Consequently the maneuver was carried out without a single hitch. Before many minutes passed Hugh, having arrived on the spot, found his chums crouching there close by the Chief.

In low whispers the head of the Oakvale police force now explained their plan of campaign. It was not known whether any hostile eye kept watch over the threatened store or not, but they must always believe that such might be the case, and act accordingly.

That principle was also in line with a scout’s education, and pleased the boys exceedingly. They had been taught never to underestimate an enemy, and that it were far better to waste time in taking precautions than have over-confidence ruin the best-laid plan.

One of the police and three of the scouts were to remain outside the building, and their part in the enterprise was easily guessed. If the thieves were like most of their class they would very likely leave one of their number without to keep watch and give a signal should any sudden peril loom up. It was to secure that sentry that the force detailed to stay in the open had been marked off.

Hugh with the rest and the Chief meant to enter the store. He had visited it often and ought to be well acquainted with its every detail. Even at that Hugh never left a thing to chance when he could help it. That very afternoon, after he had left Ralph and the others, the boy had made some sort of excuse to drop in at Ainslee’s establishment. With his scout ability he had been able to make a mental map, and had noted every particular of the store, so that he believed he could, if necessary, get around in the dark without colliding with showcases or pillars or counters.

Chief Wallis must have found a way to communicate with the proprietor of the store, for he certainly had a key that opened the side door, through which numerous shadowy figures now silently slipped.

Here again Hugh proved of considerable value, for it was he who really directed the others where to hide so that they might divide their force. The Chief had a pocket electric light along with him, but he hesitated to make use of it, lest some one passing and repassing the front of the store, and looking in, take notice of the strange glow, and communicate the alarm to his fellows.

Talking was absolutely forbidden among the scouts. They could only indicate the tremendous interest they were taking in the proceedings by numerous sly digs in the ribs, after the manner of lively boys unduly repressed. None of these were given with such vigor as to elicit a gasp or groan.