From the message tree on; it was a matter of following the traces he himself had helped to make. Luckily, Dard congratulated himself, there had been no more snow and the broken path was easy to follow. But both were tired and slowed against their will as they slogged their way toward the heights which held the cave. There they could rest, Dard promised his aching body. They paused to eat, to breathe, and then on and on and on. Dard lost all track of time, it was a business of following in a robot fashion those other marks in the snow.

They had reached the lower slopes of the rise which would take them to the cave when he leaned against a tree. Kimber’s face, stark and drawn, all the easy good humor pounded out of it by fatigue, was in outline against a snowbank.

It was in that moment of silence that Dard caught the distant sound-very faint, borne to them by some freak of air current-the bay of a hunting dog running a fresh and uncomplicated trail. Kimber’s head jerked up. Dard ran his tongue around a dry mouth. That cave up there with its narrow entrance! He wasted no breath on explanation, instead he began doggedly to climb.

But- there was something wrong about the stone before them. Maybe his eyes-snow blindness-Dard shook his head, trying to clear them. But that different look remained. So that he was partly expecting what he found when he reached the crest. Sick, shaken to the point of nausea, he stared at the closed door of the cave-closed with rocks and something else-and then he reeled retching to the other side of the hill top.

He was scrubbing out his mouth with a handful of snow when Kimber joined him.

“So, now we know about Sach—”

Dard raised sick eyes. The pilot’s mouth was stone-hard.

“Left him there like that as a threat,” muttered Kimber, “and a warning. They must have discovered that this was one of our regular posts.”

“How could any one do that?”

“Listen, son, somebody starts out with an idea-maybe in the beginning a good one. Renzi wasn’t a crook, he was basically a decent man. I heard his early speeches and I’m willing to agree that much he said was true. But he had no-well, ’charity’ is the best word for it. He wanted to force his pattern for living on everyone else, for their own good, of course. Because he was great and sincere in his own way he gained a following of honest people. They were sick of war and they were terribly shocked by the Big Burn, they could readily believe that science had led to evil. The Free Scientists were too independent-they made closed guilds of their teams. There was a separation between thinking and feeling. And feeling is easier to us than thinking. So Renzi appealed to feeling, and against the aloofness of science he won. He was joined by other fanatics, and by those who want power no matter how it comes into their hands. Then there has always been some human beings who enjoy that sort of thing-what we just saw over there. They’re lower than animals because animals don’t torture their own kind for pleasure. Fanatics, power lovers, sadists-let them get a tight hold on the government and there is no room for decency. The best this world can hope for now is a break in their ranks, an inner struggle for control.