The moment he disappeared, Donnegan saw the other four put their heads close together, and saw a sudden darkening of faces; but as for the genial winner, he had no sooner passed to the other side of the crowd and out of view, than he turned directly toward the door. His careless saunter was exchanged for a brisk walk; and Donnegan, without making himself conspicuous, was hard pressed to follow that pace. At the door he found that the gambler, with his canvas sack under his arm, had turned to the right toward the line of saddle horses which stood in the shadow; and no sooner did he reach the gloom at the side of the building than he broke into a soft, swift run. He darted down the line of horses until he came to one which was already mounted. This Donnegan saw as he followed somewhat more leisurely and closer to the horses to avoid observance. He made out that the man already on horseback was a big Negro and that he had turned his own mount and a neighboring horse out from the rest of the horses, so that they were both pointing down the street of The Corner. Donnegan saw the Negro throw the lines of his lead horse into the air. In exchange he caught the sack which the runner tossed to him, and then the gambler leaped into his saddle. It was a simple but effective plan. Suppose he were caught in the midst of a cheat; his play would be to break away to the outside of the building, shooting out the lights, if possible--trusting to the confusion to help him--and there he would find his horse held ready for him at a time when a second might be priceless. On this occasion no doubt the clever rascal had sensed the suspicion of the others. At any rate, he lost no time. He waited neither to find his stirrups nor grip the reins firmly, but the same athletic leap which carried him into the saddle set the horse in motion, and from a standing start the animal broke into a headlong gallop. He received, however, an additional burden at once. For Donnegan, from the second time he saw the man of the linen coat, had been revolving a daring plan, and during the poker game the plan had slowly matured. The moment he made sure that the gambler was heading for a horse, he increased his own speed. Ordinarily he would have been noted, but now, no doubt, the gambler feared no pursuit except one accompanied by a hue and cry. He did not hear the shadow-footed Donnegan racing over the soft ground behind him; but when he had gained the saddle, Donnegan was close behind with the impetus of his run to aid him. It was comparatively simple, therefore, to spring high in the air, and he struck fairly and squarely behind the saddle of the man in the linen coat. When he landed his revolver was in his hand and the muzzle jabbed into the back of the gambler. The other made one frantic effort to twist around, then recognized the pressure of the revolver and was still. The horses, checking their gallops in unison, were softly dog-trotting down the street.