"Remember where your loyalties are," Taraza said.

From his position in the courtyard and even when not appearing to do so, Duncan Idaho kept his attention on the observers above him. There was Patrin, of course, but Patrin did not count. It was the Reverend Mothers across from Patrin who bore watching. Seeing Lucilla, he thought: That's the new one. This thought filled him with a surge of excitement, which he took out in renewed exercise.

He completed the first three patterns of the training-play Miles Teg had ordered, vaguely aware that Patrin would report on how well he did. Duncan liked Teg and old Patrin and sensed that the feeling was reciprocated. This new Reverend Mother, though - her presence suggested interesting changes. For one thing, she was younger than the others. Also, this new one did not try to hide the eyes that were a first clue to her membership in the Bene Gesserit. His first glimpse of Schwangyu had confronted him with eyes concealed behind contact lenses that simulated non-addict pupils and slightly bloodshot whites. He had heard one of the Keep's acolytes say Schwangyu's lenses also corrected for "an astigmatic weakness that has been accepted in her genetic line as a reasonable exchange for the other qualities she transmits to her offspring."

At the time, most of this remark was unintelligible to Duncan but he had looked up the references in the Keep's library, references both scarce and severely limited in content. Schwangyu herself parried all of his questions on the subject, but the subsequent behavior of his teachers told him she had been angry. Typically, she had taken out her anger on others.

What really upset her, he suspected, was his demand to know whether she was his mother.

For a long time now Duncan had known he was something special. There were places in the elaborate compound of this Bene Gesserit Keep where he was not permitted. He had found private ways to evade such prohibitions and had stared out often through thick plaz and open windows at guards and wide reaches of cleared ground that could be enfiladed from strategically positioned pillboxes. Miles Teg himself had taught the significance of enfilade positioning.

Gammu, the planet was called now. Once, it had been known as Giedi Prime but someone named Gurney Halleck had changed that. It was all ancient history. Dull stuff. There still remained a faint smell of bitter oil in the planet's dirt from its pre-Danian days. Millennia of special plantations were changing that, his teachers explained. He could see part of this from the Keep. Forests of conifers and other trees surrounded them here.

Still covertly watching the two Reverend Mothers, Duncan did a series of cartwheels. He flexed his striking muscles as he moved, just the way Teg had taught him.

Teg also instructed in planetary defenses. Gammu was ringed by orbiting monitors whose crews could not have their families aboard. The families remained down here on Gammu, hostage to the vigilance of those guardian orbiters. Somewhere among the ships in space, there were undetectable no-ships whose crews were composed entirely of the Bashar's people and Bene Gesserit Sisters.

"I would not have taken this assignment without full charge of all defensive arrangements," Teg explained.

Duncan realized that he was "this assignment." The Keep was here to protect him. Teg's orbiting monitors, including the no-ships, protected the Keep.

It was all part of a military education whose elements Duncan found somehow familiar. Learning how to defend a seemingly vulnerable planet from attacks originating in space, he knew when those defenses were correctly placed. It was extremely complicated as a whole but the elements were identifiable and could be understood. There was, for instance, the constant monitoring of atmosphere and the blood serum of Gammu's inhabitants. Suk doctors in the pay of the Bene Gesserit were everywhere.

"Diseases are weapons," Teg said. "Our defense against diseases must be finely tuned."

Frequently, Teg railed against passive defenses. He called them "the product of a siege mentality long known to create deadly weaknesses."

When it came to military instructions from Teg, Duncan listened carefully. Patrin and the library records confirmed that the Mentat Bashar Miles Teg had been a famous military leader for the Bene Gesserit. Patrin often referred to their service together and always Teg was the hero.

"Mobility is the key to military success," Teg said. "If you're tied down in forts, even whole-planet forts, you are ultimately vulnerable."

Teg did not much care for Gammu.

"I see that you already know this place was called Giedi Prime once. The Harkonnens who ruled here taught us a few things. We have a better idea, thanks to them, of how terrifyingly brutal humans can become."

As he recalled this, Duncan observed that the two Reverend Mothers watching from the parapet obviously were discussing him.

Am I the new one's assignment?

Duncan did not like being watched and he hoped the new one would allow him some time to himself. She did not look like a tough one. Not like Schwangyu.

As he continued his exercises, Duncan timed them to a private litany: Damn Schwangyu! Damn Schwangyu!

He had hated Schwangyu from the age of nine - four years now. She did not know his hate, he thought. She had probably forgotten all about the incident where his hate had been ignited.

Barely nine and he had managed to slip through the inner guards out into a tunnel that led to one of the pillboxes. Smell of fungus in the tunnel. Dim lights. Dampness. He peered out through the box's weapons slits before being caught and hustled back into the core of the Keep.

This escapade occasioned a stern lecture from Schwangyu, a remote and threatening figure whose orders must be obeyed. That was how he still thought of her, although he had since learned about the Bene Gesserit Voice-of-Command, that vocal subtlety which could bend the will of an untrained listener.

She must be obeyed.

"You have occasioned the disciplining of an entire guard unit," Schwangyu said. "They will be severely punished."

That had been the most terrible part of her lecture. Duncan liked some of the guards and occasionally lured some of them into real play with laughter and tumbling. His prank, sneaking out to the pillbox, had hurt his friends.

Duncan knew what it was to be punished.

Damn Schwangyu! Damn Schwangyu!...

After Schwangyu's lecture, Duncan ran to his chief instructor of the moment, Reverend Mother Tamalane, another of the wizened old ones with a cool and aloof manner, snowy hair above a narrow face and a leather skin. He demanded of Tamalane to know about the punishment of his guards. Tamalane fell into a surprising pensive mood, her voice like sand rasping against wood.

"Punishments? Well, well."

They were in the small teaching room off the larger practice floor where Tamalane went each evening to prepare the next day's lessons. It was a place of bubble and spool readers and other sophisticated means for information storage and retrieval. Duncan far preferred it to the library but he was not allowed in the teaching room unattended. It was a bright room lighted by many suspensor-buoyed glowglobes. At his intrusion, Tamalane turned away from where she laid out his lessons.

"There's always something of a sacrificial banquet about our major punishments," she said. "The guards will, of course, receive major punishment."