But that plan was destined never to be carried out. The long day came to an end. The darkness settled down over sandy plain and distant mountain. The silence of midnight reigned over the lonely bivouac and the somber ranch, yet had not Blake given orders that every man must remain close to the horses throughout the evening, adventurous spirits from the troop could surely have heard the ominous whisperings within the corral and marked the stealthy glidings to and fro. At nine o'clock the famous roan was cautiously led forth from the gateway and close under the black shadow of the wall, and not until well beyond earshot of the willows was he mounted and headed eastward. At ten Loring was sleeping soundly in preparation for the night ride before him, and Blake, nervously puffing at his pipe, was listening to the low, murmurous chat where the guard were gathered about their watchfires, when soft, timid, luring, sweet, again he heard the tinkle of that guitar. It ceased abruptly. There was a minute of silence, then, a trifle louder, it began again; again ceased as though waiting reply, and Blake sat up and listened. Once more, not at the westward willows, not at the ranch, not on the open plain, but somewhere close at hand, close to his side of the bivouac, away from the guard, away from the occasionally stamping, snorting horses, and equally far from the dark, shadowy buildings of the stage station, and Blake slowly, noiselessly got to his feet and, after listening one moment to Loring's deep, regular breathing, buckled on his revolver belt and stole forth into the starlight. Yes, there was the sound again--a few notes, a bar or two of the song Pancha was singing at the willows the night before, and close to the edge of the willows crouched the musician. With his hand on the butt of his revolver, Blake strode slowly toward the shrinking form, and, beckoning, it rose and moved swiftly away. "Halt where you are," growled the lieutenant, "if you want me to stay here."