There was no longer any attempt at concealment. A shot from Slade's pistol was the signal for a violent dash that instantly set the big herd in motion. As the attack came from the west the cattle moved eastward, bleating and bellowing with surprise. They moved slowly at first, as though confused by the suddenness of the rush--milling in bewilderment; detached numbers dashing here and there in wild affright. Concerted movement came when the strange horsemen began to flank them. Eastward there was open ground, with no dashing, shooting men to bar their progress, and eastward they went, a dark mass that moved with exceeding swiftness straight up the valley. The few cowboys who had been riding night herd made a feeble, astonished resistance. There were several shots, frenzied cries of rage and pain; and then nothing but the thunderous rumble of hoofs; the shouts of the driving rustlers; scattered shots and the clashing of horns. A vast dust cloud ballooned above the herd; and five riderless Circle L horses trotted aimlessly about, snorting with fright. The big herd had gone with the suddenness of a cyclone. It went, rumbling up the valley, the dust cloud hovering over it, blotting out its movements. It roared past the Circle L bunkhouses, leaving behind it a number of Circle L cowboys who had been awakened by the thunderous noise. The Circle L men had plunged outside in various stages of undress--all bootless, unprepared, amazed, and profane. "Stampede!" yelled a hoarse voice. "Stampede--hell!" shouted another. "It's rustlers! That damn Antrim bunch!" This was Shorty. The lithe giant had rushed out of the bunkhouse as the herd thundered past. He was now running back toward the bunkhouse, trying to tighten the waistband of his trousers with a belt whose buckleless end persisted in eluding his grasp. His words had spurred the other men to frenzied action. There was confusion in the bunkhouse where men collided with their fellows as they plunged about for discarded garments, gun-belts, and boots. But soon they began to straggle out of the door in twos and threes and singly, racing for the corral and for the lean-to where they kept their saddles. Foremost among them was Shorty. His tall figure appeared first at the corral gates, and his long legs were the first astride a horse. While the others were running hither and yon near the bunkhouse and the corral, Shorty raced his horse to the ranchhouse, slid off and crossed the wide porch in two or three leaps. He was confronted at the door by Mrs. Lawler, ashen, trembling. "Rustlers!" he said, shortly, answering her look of interrogation. "Where's the boss?" The woman's voice broke. "Sheriff Moreton came after him some hours ago--and took him to Willets--charging him with murdering those two men at the line cabin, last winter. He isn't guilty, of course," declared the mother; "but of course he had to go with Moreton."