"How can I make it clear?" she asked helplessly. "There are sounds you can't hear because they extend beyond the range of human ears. There are limits to your vision too. And I removed myself beyond those limits."

He said, "Oh," continuing to regard her fixedly. Then, "You could escape any time."

"Yes," she admitted. "But this is my job. I don't want to escape."

"What exactly is your job?" he demanded.

"Intelligence. There are many of us, both men and women disguised as humans who circulate among the Unfit."

"Then—?" Joel prompted.

"Then we make our reports to the Thinkers."

"You've mentioned these Thinkers before. Who are they?"

"Our scientists. Our wise men." She paused, changed the subject abruptly. "Today, Joel, we are to be sold."

"Damn!" He was appalled, remembering Priscilla Cameron's threat to buy him.