The computational thoughts had clean edges, sharp relief. There were no blurred between-places. Alia chose abduction and terror because she had become alien, non-Atreides. House Corrino was a threat, but not in the ways which Alia argued in Council. Alia wanted the Lady Jessica removed because that searing Bene Gesserit intelligence had seen what only now had become clear to him.

Idaho shook himself out of the mentat trance, saw Alia standing in front of him, a coldly measuring expression on her face.

"Wouldn't you rather the Lady Jessica were killed?" he asked.

The alien-flash of her joy lay exposed before his eyes for a brief instant before being covered by false outrage. "Duncan!"

Yes, this alien-Alia preferred matricide.

"You are afraid of your mother, not for her," he said.

She spoke without a change in her measuring stare. "Of course I am. She has reported about me to the Sisterhood."

"What do you mean?"

"Don't you know the greatest temptation for a Bene Gesserit?" She moved closer to him, seductive, looked upward at him through her lashes. "I thought only to keep myself strong and alert for the sake of the twins."

"You speak of temptation," he said, his voice mentat-flat.

"It's the thing which the Sisterhood hides most deeply, the thing they most fear. It's why they call me Abomination. They know their inhibitions won't hold me back. Temptation - they always speak with heavy emphasis: Great Temptation. You see, we who employ the Bene Gesserit teachings can influence such things as the internal adjustment of enzyme balance within our bodies. It can prolong youth - far longer than with melange. Do you see the consequences should many Bene Gesserits do this? It would be noticed. I'm sure you compute the accuracy of what I'm saying. Melange is what makes us the target for so many plots. We control a substance which prolongs life. What if it became known that Bene Gesserits controlled an even more potent secret? You see! Not one Reverend Mother would be safe. Abduction and torture of Bene Gesserits would become a most common activity."

"You've accomplished this enzyme balancing." It was a statement, not a question.

"I've defied the Sisterhood! My mother's reports to the Sisterhood will make the Bene Gesserits unswerving allies of House Corrino."

How very plausible, he thought.

He tested: "But surely your own mother would not turn against you!"

"She was Bene Gesserit long before she was my mother, Duncan, she permitted her own son, my brother, to undergo the test of the gom jabbar! She arranged it! And she knew he might not survive it! Bene Gesserits have always been short on faith and long on pragmatism. She'll act against me if she believes it's in the best interests of the Sisterhood."

He nodded. How convincing she was. It was a sad thought.

"We must hold the initiative," she said. "That's our sharpest weapon."

"There's the problem of Gurney Halleck," he said. "Do I have to kill my old friend?"

"Gurney's off on some spy errand in the desert," she said, knowing Idaho already was aware of this. "He's safely out of the way."

"Very odd," he said, "the Regent Governor of Caladan running errands here on Arrakis."

"Why not?" Alia demanded. "He's her lover - in his dreams if not in fact."

"Yes, of course." And he wondered that she did not hear the insincerity in his voice.

"When will you abduct her?" Alia asked.

"It's better that you don't know."

"Yes... yes, I see. Where'll you take her?"

"Where she cannot be found. Depend upon it; she won't be left here to threaten you."

The glee in Alia's eyes could not be mistaken. "But where will..."

"If you do not know, then you can answer before a Truthsayer, if necessary, that you do not know where she is."

"Ahhh, clever, Duncan."

Now she believes I will kill the Lady Jessica, he thought. And he said: "Goodbye, beloved."

She did not hear the finality in his voice, even kissed him lightly as he left.

And all the way down through the sietchlike maze of Temple corridors, Idaho brushed at his eyes. Tleilaxu eyes were not immune to tears.

Stilgar quadrupled the sietch guard around the twins, but he knew it was useless. The lad was like his Atreides namesake, the grandfather Leto. Everyone who'd known the original Duke remarked on it. Leto had the measuring look about him, and caution, yes, but all of it had to be evaluated against that latent wildness, the susceptibility to dangerous decisions.

Ghanima was more like her mother. There was Chani's red hair, the set of Chani's eyes, and a calculating way about her when she adjusted to difficulties. She often said that she only did what she had to do, but where Leto led she would follow.

And Leto was going to lead them into danger.

Not once did Stilgar think of taking his problem to Alia. That ruled out Irulan, who ran to Alia with anything and everything. In coming to his decision, Stilgar realized he had accepted the possibility that Leto judged Alia correctly.

She uses people in a casual and callous way, he thought. She even uses Duncan that way. It isn't so much that she'd turn on me and kill me. She'd discard me.

Meanwhile the guard was strengthened and Stilgar stalked his sietch like a robed specter, prying everywhere. All the time, his mind seethed with the doubts Leto had planted there. If one could not depend upon tradition, then where was the rock upon which to anchor his life?

On the afternoon of the Convocation of Welcome for the Lady Jessica, Stilgar spied Ghanima standing with her grandmother at the entrance lip to the sietch's great assembly chamber. It was early and Alia had not yet arrived, but people already were thronging into the chamber, casting surreptitious glances at the child and adult as they passed.

Stilgar paused in a shadowed alcove out of the crowd flow and watched the pair of them, unable to hear their words above the murmuring throb of an assembling multitude. The people of many tribes would be here today to welcome back their old Reverend Mother. But he stared at Ghanima. Her eyes, the way they danced when she spoke! The movement fascinated him. Those deep blue, steady, demanding, measuring eyes. And that way of throwing her red-gold hair off her shoulder with a twist of the head: that was Chani. It was a ghostly resurrection, an uncanny resemblance.

Slowly Stilgar drew closer and took up his station in another alcove.

He could not associate Ghanima's observing manner with any other child of his experience - except her brother. Where was Leto? Stilgar glanced back up the crowded passage. His guards would have spread an alarm if anything were amiss. He shook his head. These twins assaulted his sanity. They were a constant abrasion against his peace of mind. He could almost hate them. Kin were not immune from one's hatred, but blood (and its precious water) carried demands for one's countenance which transcended most other concerns. These twins existed as his greatest responsibility.

Dust-filtered brown light came from the cavernous assembly chamber beyond Ghanima and Jessica. It touched the child's shoulders and the new white robe she wore, backlighting her hair as she turned to peer into the passage at the people thronging past.

Why did Leto afflict me with these doubts? he wondered. There was no doubt that it had been done deliberately. Perhaps Leto wanted me to have a small share of his own mental experience. Stilgar knew why the twins were different, but had always found his reasoning processes unable to accept what he knew. He had never experienced the womb as prison to an awakened consciousness - a living awareness from the second month of gestation, so it was said.