Still every eye was fastened on that point where the advancing man or animal would first appear. Frank, too, had his rifle bearing on the spot; and taken as a whole the appearance of the little company, flattened out against the break in the mighty rock wall, was rather threatening. All of them could catch the sounds below now. Whoever came up the rock ladder must be unused to negotiating such a stairway, for they rattled small bits of loose shale down at times; and Frank felt sure he could hear a panting sound, very much like that which tired Bob had been making a minute ago. And, as he listened, Frank made a discovery that caused him to tighten his grip on that reliable repeating rifle. There were two of the pursuers! And he anticipated that the leader must come in sight ere another dozen seconds passed! There was some sort of movement now, down in the region of the little twist where the steep stairway of the old cliff dwellers made a turn. Then a head and shoulders came into view. Frank chuckled aloud. Just in almost that last second of time he had suddenly guessed the truth, when, in this clinging figure that was staring upward, as though filled with genuine surprise, he recognized an old friend. It was Mr. Stanwix, the sheriff of the county! He and his mate from the adjoining division of Coconino must have just had a glimpse of Charley Moi disappearing in the dark hole at the base of the cliff; and, being in pursuit of two shrewd law breakers, who had been known to appear in other dress than that of cowmen, perhaps the officers had concluded that here was something that ought to be investigated. Frank immediately made a friendly gesture with one hand. He did not want to risk the chances of being fired upon by the officers of the law, who might take the little party for bad men. Then he beckoned in a fashion that the sheriff must readily understand to mean caution, and silence. They saw Mr. Stanwix bend down as though he might be explaining to his fellow officer what an astonishing thing had happened. After that he came on, climbing the steep rock ladder as an exhausted person might. Yet his nature was like that of the bulldog; and once he had started to do a thing, nothing could make him stop. When he arrived at a point where he could make his way alongside Frank, squeezing past Charley Moi and Bob, the sheriff of Yavapai County turned an inquiring look upon his young friend. Whereupon Frank started in to tell him just who the other three in the party happened to be; and that they were bent upon foiling the lawless game of three rascals plotting for a big stake. In return Mr. Stanwix intimated that they had suspected something wrong when they saw from a little distance two persons, and one of them a Chinaman, disappearing in a cleft of the rocks. Further explanations must await a better opportunity, however. They were now too near the series of chambers connecting with one another to hesitate longer.