"The goal of the experiment, the last generation issued in Kalechi's laboratories, were Satog copies of embryonic human beings. This stage was comprised of approximately twelve hundred individuals who were now permitted to mature and were schooled individually in complete isolation by Satog teachers. They were indoctrinated with their purpose in life ... the destruction of our populations ... and trained fully in the manner of accomplishing it.
"Eventually, each was shipped to a Federation world. Cover identities as obscure Federation citizens with backgrounds and records had been prepared. The final instructions given these agents were simple. They were to do nothing to draw attention to themselves, make no attempt to contact one another. They were to create their stocks of lethal organisms, provide methods of distribution and, on a selected day, three Federation years away, release the floods of death."
The voice paused briefly, went on. "It is a sobering reflection that this plan—an attack by a comparatively minor race with one specialized skill on the greatest human civilization in history—might very well have been appallingly successful. But the Great Satogs failed, in part because of the very perfection of their work.
"From the human beings on board Ohl Cantrall's captured survey ship the Satog scientists selected Cantrall himself and two female technicians on his staff as the models to be followed in developing Kalechi's pseudohumanity. In the twelve hundred members of the group sent to the Federation ninety years later, these three identity-patterns are recognizable. They appear in varying degrees of combination, but an occasional individual will show only one or the other of the three patterns involved.
"Ohl Cantrall was regarded as a great man in his time, and his identification pattern is on record. That was the detail which first revealed the plot. When three duplicates of that particular pattern—and a considerable number of approximate duplicates—turned up simultaneously in identification banks at widely separated points in the Federation, it aroused more than scientific curiosity. Our security system has learned to look with suspicion on apparent miracles. The unsuspecting 'Cantralls' were located and apprehended at once; the threat to the Federation was disclosed; and an intensive though unpublicized search for the scattered group of Kalechi agents began immediately...."
The voice paused again.
The Satog image above the pit vanished. A clear light sprang up in the big room. Simultaneously, Halder felt the nightmare immobility draining from him and the sensation of dreamlike unreality fade from his mind. He turned to the right, found Kilby's eyes already on him, saw the Rellis couple sitting beyond her ... Rane, no longer disguised, looking like a mirror image of Halder.
They were still fastened to their chairs. Halder's gaze shifted back quickly to the center of the room. Where the pit had been, the flooring was now level, carrying a massive, polished table. Behind the table sat a heavily built, white-haired man with a strong face, harsh mouth, in the formal black and gold robes of a Councilman of the Federation.
"I am Councilman Mavig." The voice was the one that had spoken in the dark; it came now from the man at the table. "I am in charge of the operation against the Kalechi agents, and it is my duty to inform them, after their arrest and examination, of the disposition that must be made of them."