Blunt but increasingly self-evident, Lise thought. "It's true that he was taken by Genomic Security?"

"By one of what they call their Executive Action Groups."

"And they were hunting for Dr. Dvali and his group."

"Yes."

"And so were you."

"Yes. For slightly different reasons."

"You wanted to stop him from creating Isaac."

"I wanted to stop him from performing a needlessly cruel and probably useless human experiment, yes."

"Isn't that what Genomic Security wanted?"

"Only in their press releases. Do you really believe organizations like Genomic Security operate within their mission statements? If Genomic Security could acquire the tools they would have secret bunkers full of multiple Isaacs—wired to machines, under armed guard."

Lise shook her head to order her thoughts. "How did you meet my father?"

"The first useful person I met in Equatoria was Diane Dupree. There's no formal hierarchy among Terrestrial Fourths, but in every Fourth community there's some pivotal figure who figures in every major decision. Diane played that role in coastal Equatoria. I told her why I wanted to find Dvali and she gave me the names of people who might be useful—not all of them Fourths. Dr. Dvali had befriended your father. I befriended him too."

"Dr. Dvali said my father was trustworthy."

"Your father had a striking faith in fundamental human goodness. That didn't always work to his advantage."

"You think Dvali took advantage of him?"

"I think it took him a long time to see Dr. Dvali for what he was."

"Which is?"

"A man with grandiose ambitions, profound insecurities, and a dangerously malleable conscience. Your father was reluctant to reveal Dr. Dvali's announced plans and whereabouts, even to me."

"Did he, though?"

"Once we got to know each other. We spent a lot of time discussing cosmology first. I think that was your father's unique way of evaluating people. You can tell a lot about a person, he once said, by the way they look at the stars."

"If he told you what he knew, why couldn't you find Dvali and stop him?"

"Because Dr. Dvali was wise enough to change his plans once he left Port Magellan. Your father believed Dvali was establishing a compound on the far west coast of Equatoria—still mostly a wilderness even today, apart from a few fishing villages. That's what he told me, and that's no doubt what he told Genomic Security when they interrogated him."

"Dvali thinks my father refused to talk—that that was why they killed him."