Dr. Wilton introduced her. "You will notice--" he coughed "--you have noticed," he continued broadly, "that Arna possesses several attributes." There were low murmurings. "But the single A in her number indicates that she ranks at the top of one field, and the number itself means that she is the ninety-fourth to become a trainee in the program which develops these unique humans; her code name reveals that she possesses Awareness in Mathematics--which is to say that she somehow immediately knows the answer to any mathematical problem presented, without having to consciously calculate or even think about it. Her particular gift was known on Earth as far back as the Seventeenth Century, but it has always been extremely rare and relatively undeveloped." "Can she talk?" questioned a voice good-humoredly. The psychologist chuckled. "Say something for the boys, Arna," he invited. With the timing of a video star the girl parted her lips provocatively, leaned slightly forward and then, when expectancy was at its height, said "Boo!" [Illustration] Friendly laughter echoed through the paneled room, coming from all but the Venusian. He rose stiffly. "This is all very well, but we're here t'get _all_ the dope on Sykin Supcel. Aren't you holding out something?" Dr. Wilton looked at the man squarely. "Yes," he said softly. "Yes, I am." His gaze swept the others. "The interview is terminated, gentlemen--I hope your news stories will be sufficiently popular to make your trip worthwhile. Your lapel cameras and their eyepieces will be returned as you enter your 'copters." The Venusian was the first to voice his thanks, with a ring of sincerity as true as in the others' polite speeches. Alone with Arna, Dr. Wilton punched several buttons on the desk, consulted a memo and spoke briskly to a blank video screen. "Start--all--in. Step seven two eight of Operation Catskin successful. Sur-Malic spy among reporters, as predicted by eighty-two point six probability. Lor'lsoon, posing as Venusian, exposed by his inadequate training--probability about sixty; his unconscious belligerency--probability about ninety. He is to be undisturbed for forty-eight hours, then detained after an apparently routine round-up. Any contacts he may reveal during the next two days are to be observed but not disturbed. End--all--out." Arna leaned over the desk and kissed him lightly. "Nice work, Dad." Then she went on, tensely: "Any word from Sy--or is he supposed to make contact later?" * * * * *