"Like me," Dalgard repeated, and then the truth which might lie behind that exploded within his brain. "Terrans!" he breathed the word. Men of Pax perhaps who had come to hunt down the outlaws who had successfully eluded their rule on earth? But how had the colonists been traced? And why? Or were they other fugitives like themselves? So much, so very much of what the colonists should know of their past had been erased during the time of the Great Sickness twenty years after their landing. Then three fourths of the original immigrants had died. Only the children of the second generation and a handful of weakened Elders had remained. Knowledge was lost and some distorted by failing memories, old skills were gone. But if the new Terrans were in that city.... He had to know--to know and be able to warn his people. For the darkness of Pax was a memory they had _not_ lost! "I must see them," he said. "That is true. And only you can tell us what manner of folk these strangers be," the merman chief agreed. "Therefore you shall go ashore with my warriors and look upon them--to tell us the truth. Also we must learn what _they_ do here." It was decided that using waterways known to the merpeople, one which Dalgard could also take wearing the diving equipment, a scouting party would head shoreward the next day, with the river itself providing the entrance into the heart of the forbidden territory. 12 ALIEN PATROL Raf leaned back against the wall. Long since the actions of the aliens in the storage house had ceased to interest him, since they would not allow any of the Terrans to approach their plunder and he could not ask questions. Lablet continued to follow the officer about, vainly trying to understand his speech. And Hobart had taken his place by the upper entrance, his hand held stiffly across his body. The pilot knew that the captain was engaged in photographing all this activity with a wristband camera, hoping to make something of it later. But Raf's own inclination was to slip out and do some exploring in those underground corridors beyond. Having remained where he was for a wearisome time, he noticed that his presence was now taken for granted by the hurrying aliens who brushed about him intent upon their assignments. And slowly he began to edge along the wall toward the other doorway. Once he froze as the officer strode by, Lablet in attendance. But what the painted warrior was looking for was a crystal box on a shelf to Raf's left. When he had pointed that out to an underling he was off again, and Raf was free to continue his crab's progress. Luck favored him, for, as he reached the moment when he must duck out the portal, there was a sudden flurry at the other end of the chamber where four of the aliens, under a volley of orders, strove to move an unwieldy piece of intricate machinery.