 Why are the webfoots chasing Stinson and Sybtl?
Stinson lay still in the sand where he fell, gloating over the success of his arrival. He touched the pencil-line scar behind his ear where the cylinder was buried, marveling at the power stored there, power to fling him from earth to this fourth planet of the Centaurian system in an instant. It had happened so fast that he could almost feel the warm, humid Missouri air, though he was light years from Missouri. A gray, funnel-shaped cloud of dust stood off to his left. Weather control made cyclones and other climatic phenomena on earth practically non-existent. The cloud did not move, though, except to spin on its axis rapidly, emitting a high-pitched, scarcely audible whine, like a high speed motor. Dark clouds capped one peak of the mountains on his left. He was here and Earth was somewhere up there. The sun burned fiercely, although he would have said it was about four o'clock in the afternoon, if this had been Earth. The sun shone obliquely, throwing Stinson's shadow upon the sand. He was here to investigate, to determine if this planet was capable of supporting life. But then, how could a group of loosely spaced grains of sand possibly have a nervous system? He became so absorbed in doing this that he failed to notice how the wind devil drew closer and closer, but when he inhaled the first grains of sand, the realization of what was happening dawned with a flash of fear. As he stood beside a small creek, a chill wind blew from the northwest. From one angle they were animals, from another birds, from a third they were vaguely humanoid creatures, glowering at him with primitive ferocity. All were dressed from the waist down only, in a shimmering skirt that sparkled as they moved. "My name is Stinson," he said, pointing to himself. He left the chains by his own method of travel, and reappeared behind the two men. Still angered, Stinson grasped it firmly, with half a notion to break it over his head. They had exhibited human emotions of anger, fear and, that most human of all characteristics, curiosity. But up to now the tube and the chain was the only evidence of an advanced technology, unless the ancient inscriptions in the stone wall of the pool, and the statues lining the wall were evidences. There, at the cavern entrance, the wind devil writhed and undulated in a brilliant harmony of colors. It came from the ceiling, the floor, the walls, the steaming pool.
 The webfoots think Sybtl did not please the God.
 The webfoots think Stinson took Syblt against her will.  Stinson accidentally killed one of the webfoots while disarming him.  Stinson murdered the leader of the webfoots.  The webfoots think Sybtl did not please the God.