Calumet cursed. It was Bob's pup. The animal planted himself in the stream of moonlight that came in through the window, facing Calumet and emitting a series of short, high-pitched, resentful barks.

There was humor in this situation, but Calumet did not see it. He heard a cry of surprise from the direction of the dining-room, and he turned just in time to see the office door closing on a flood of light.

With savage energy and haste, he pulled on his boots, darted out of the house, ran across the rear porch, leaped down, and ran around the nearest corner of the house. As he ran he jerked his pistol from its holster.

When he got to the front of the house he bounded to the door of the office and threw it violently open, expecting to surprise Betty and her confederate. He was confronted by a dense blackness. He dodged back, fearing a trap, and then lighted a match and held it around the corner of one of the door jambs. After the match was burning well he threw it into the room and then peered after it. There came no reply to this challenge, and so he strode in boldly, lighting another match.

The room was empty.

He saw how it was. Betty and the man had heard the barking of the dog and had suspected the presence of an eavesdropper. The man had fled. Probably by this time Betty was in her room. Calumet went out upon the porch, leaped off, and ran around the house in a direction opposite that which had marked his course when coming toward the front, covering the ground with long, swift strides. He reasoned that as he had seen no one leave the house from the other side or the front, whoever had been with Betty had made his escape in this direction, and he drew a breath of satisfaction when, approaching some underbrush near the kitchen, he saw outlined in the moonlight the figure of a man on a horse.

The latter had evidently just mounted, for at the instant Calumet saw him he had just settled into the saddle, one foot searching for a stirrup. He was about seventy-five feet distant, and he turned at about the instant that Calumet saw him. That instant was enough for Calumet, for as the man turned his face was bathed for a fraction of a second in the moonlight, and Calumet recognized him. It was Neal Taggart.

Calumet halted. His six-shooter roared at the exact second that the man buried his spurs in the flanks of his horse and threw himself forward upon its neck.

The bullet must have missed him only by a narrow margin, but it did miss, for he made no sign of injury. His instant action in throwing himself forward had undoubtedly saved his life. Calumet swung the pistol over his head and brought it down to a quick level, whipping another shot after the fleeing rider. But evidently the latter had anticipated the action, for as he rode he jumped his horse from one side to another, and as the distance was already great, and growing greater, he made an elusive target.

Calumet saw his failure and stood silent, watching until Taggart was well out into the valley, riding hard, a cloud of dust enveloping him. A yell reached Calumet from the distance—derisive, defiant, mocking. Calumet cursed then, giving voice to his rage and disappointment.