clothed and photographed. Then they were broken into groups and registered by Greens sitting in armored cubicles within the walls. There was a machine-like efficiency to the bureaucratic procedure on this level. Aram Jerrold had the impression that the operation would continue to run by sheer momentum should higher authority suddenly try to halt it.... Jerrold presented himself before a Green of about forty, a man with a thin, tired face and colorless eyes, who codified the information given him, looking up at the prisoner with no apparent interest. Quite abruptly, he emerged from his cubicle, signalling another Green to take his place. "You," he said to Aram; "come with me." Jerrold followed the Green out of the reception building and out into the rain. For a wild moment, Aram had the impulse to try an escape, but the thought died stillborn. Escape was plainly impossible. There was simply no place to go—even if he could shake free of his guard and the others stationed about the enclosure. The prison ship was being refuelled a short distance from the reception pen, but the valves were closed and guarded. Presently Jerrold and his guide reached a shaft imbedded in the side of the crag, atop which sat the grim Fortress. Aram turned his eyes upward. The great, bastioned stronghold seemed to crouch on the crest of the cliff. On the highest turret, a green banner emblazoned with a golden Spaceship and Sun hung sodden and limp in the falling rain. With no hesitation, the Green stationed at the guard-post by the shaft entrance signalled Aram and his guide through. There was a short walk up a spiralling ramp and then they stood before what appeared to be simply a blank wall. Jerrold stared in perplexity as his guard took a bit of metal from his tunic and held it to the wall. "Isotope," said the guard shortly, "It acts as a key to the scanner ... below." Before Aram could question him, the section of wall slid back soundlessly and they stepped into a tubecar. Quickly, the Green set up a complicated series of stops on the tubecar controls and the vehicle started downward with a rush. Aram clutched at the man for support. Something was not as it should be. Then, quite suddenly, he realized what it was. The tubecar was travelling down ... and the Fortress lay above! "Where are we going?" he asked cautiously. The Green shook his head.