"Oh yes. He hasn't had time to get here yet, but—he'll come fast when he starts. This is the only plan I can think of."
Alaire drove as swiftly as she dared, following the blurred streak of gray that was the road, and taking the bumps with utter recklessness. Already the yellow rim of the moon was peering over the horizon to her right, and by its light she found the road that turned abruptly toward the Rio Grande, a mile or more distant. The black mud from the last heavy rain had hardened; the ruts in this side road were deep, and the car leaped and plunged, flinging its occupants from side to side. Ahead loomed the dark ridge of the river thickets, a dense rampart of mesquite, ebony, and coma, with here and there a taller alamo or hackberry thrusting itself skyward. But even before they were sheltered from the moonlight Paloma saw the lights of another automobile approaching along the main-traveled highway behind them—the lights, evidently, of Tad Lewis's machine. A moment later Alaire's car drove into the black shadows, but, fearing to switch on her headlights, she felt her way cautiously between the walls of foliage until at her right another opening showed, like a narrow arroyo, diverging from the one they followed. Into this she swerved, regardless of the fact that it was half grown up with brush. Thorny branches swept the sides of the machine; rank, dew-soaked grass rose to the height of the tonneau. The car came to a jolting pause, then the motor ceased its purring, and the two women sat motionless, listening for the rattle of the on-coming machine. It had been a short, swift, exciting ride. "Young Ed's" runabout could not be many minutes ahead of them.
Alaire knew the Tad Lewis car, an old-style, cheap affair, which advertised its mechanical imperfections by a loud clashing of gears and a noisy complaint of loose parts; therefore, when the leafy cañon walls behind her hiding-place were brilliantly illuminated and a car stole silently past at low speed, she seized Paloma by the arm and whispered:
"That's not Lewis."
"Who is it? It can't be Ed."
"No, he and Longorio are ahead of us. It's another motor entirely."
The women got out, then breasted the high grass and brambles between their hiding-place and the pump-house road. As soon as they were back in the trail they made all possible speed, speculating meanwhile upon the mystery of the unknown car. Emerging into the clearing which surrounded the power-plant, they discovered the machine in question standing dark and deserted in the shadows. Evidently the driver, whoever he was, well knew what he was about, and had not blundered upon this place by accident. A hundred yards away they could now see the ghostly Rio Grande, its saffron surface faintly silvered by the low moon; lights gleamed from the windows of Morales's house. In the distance the vague outlines of the Mexican shore were resolving themselves, and far beyond winked the evidence that some belated citizens of Romero were still awake.
Paloma had brought with her the long-barreled Winchester rifle, and this she clutched nervously as she and Alaire stood whispering. Conditions were favorable for an approach to the pump-house itself, for two ridges of earth, perhaps eight feet high, thrown up like parallel furrows from a giant plow, marked the beginning of the irrigation ditch, and in the shadow of these the women worked their way forward, unobserved. They had nearly reached their goal when out into the clearing behind them, with metallic rattle and clang, burst another automobile, and Paloma whispered, excitedly:
"There's the Lewis outfit at last."
In the Lewis car were several men. They descended hurriedly, and when one of them ran around the front of the car to turn off its lights both women saw that he carried a rifle. Evidently Tad Lewis had come prepared for desperate measures.