He had almost reached the foot of the ridge when he brought himself short with a sudden low cry of horror. He had reached a point where the side of the ridge seemed to have broken off, leaving a precipitous wall. In a flash he realized what had happened. Deane and Isobel had descended upon a "snow trap," and it had given way under their weight, plunging them to the rocks below. For no longer than a breath he stood still, and in that moment there came a sound from far behind that sent a strange thrill through him. It was the howl of a dog. Bucky and his men were in close pursuit, and they were traveling with the team. He swung a little to the left to escape the edge of the trap and plunged recklessly to the bottom. Not until he saw where Scottie Deane and the team had dragged themselves from the snow avalanche did he breathe freely again. Isobel was safe! He laughed in his joy and wiped the nervous sweat from his face as he saw the prints of her moccasins where Deane had righted the sledge. And then, for the first time, he observed a number of small red stains on the snow. Either Isobel or Deane had been injured in the fall, perhaps slightly. A hundred yards from the "trap" the sledge had stopped again, and from this point it was Deane who rode and Isobel who walked! He followed more cautiously now. Another hundred yards and he stopped to sniff the air. Ahead of him the spruce and balsam grew close and thick, and from that shelter he was sure that something was coming to him on the air. At first he thought it was the odor of the balsam. A moment later he knew that it was smoke.