I have had some experience at playing the shadow. But it was not easy here along the almost deserted and fairly bright Nareda streets. Perona was walking swiftly down the slope toward the outskirts of the village where it bordered upon the Nares Sea. For a time I thought he was headed for the landing field, but at a cross-path he turned sharply to the right, away from the field, whose sheen of lights I could now see down the rocky defile ahead of me. There was nothing but broken, precipitous rocky country ahead of him, into which this path he had taken was winding. What could Perona, a Minister, be engaged in, wandering off alone into this black, deserted region? It was black indeed, by now. The village was soon far behind us. A storm was in the night air; a wind off the sea; solid black clouds overhead blotted out the moon and stars. The crags and buttes and gullies of this tumbled area loomed barely visible about me. There were times when only my feel of the path under my feet kept me from straying, to fall into a ravine or crevice. I prowled perhaps two hundred yards behind Perona. He was using a tiny hand-flash now; it bobbed and winked in the darkness ahead, vanishing sometimes when a curve in the path hid him, or when he plunged down into a gully and up again. I had no search-beam. Nor would I have dared use one: Perona could too obviously have seen that someone was following him. There was half a mile of this, I think, though it seemed interminable. I could hear the sea, rising with the wind, pounding against the rocks to my left. Then, a distance ahead, I saw lights moving. Perona's--and others. Three or four of them. Their combined glow made a radiance which illumined the path and rocks. I could see the figures of several men whom Perona had joined. They stood a moment and then moved off. To the right a ragged cliff wall towered the path. The spots of light bobbed toward it. I caught the vague outline of a huge broken opening, like a cave mouth in the cliff. The lights were swallowed by it. I crept cautiously forward. CHAPTER VI _Ether-wave Eavesdropping_ I had thought it was a cavern mouth into which the men had disappeared, but it was not. I reached it without any encounter. It loomed above me, a great archway in the cliff--an opening fifty feet high and equally as broad. And behind it was a roofless cave--a sort of irregularly circular bowl, five hundred feet across its broken, bowlder-strewn, caked-ooze floor. I crouched in the blackness under the archway. The moon had risen and its light filtered with occasional shafts through the swift-flying black clouds overhead. The scene was brighter. It was dark in the archway, but a glow of moonlight in the bowl beyond showed me its tumbled floor and the precipitous, eroded walls, like a crater-rim, which encircled it.