Page 91 of Towers of Midnight (The Wheel of Time 13)

"Let us begin there, then," Egwene said. "Seaine?"

"Well," Seaine said, "I will begin by saying that one of the Forsaken undoubtedly has knowledge that we can't guess at. So there may be no way to ascertain how she defeated the Oath Rod. For instance, there might be a way to disable it for a short time, or perhaps there are special words that can be used to evade its effects. The rod is a thing of the Age of Legends, and though we've used it for millennia, we don't really understand it. No more than we do most ter'angreal!'

"Very well," Egwene said.

"But," Seaine said, getting out a sheet of paper, "that taken into account, I have three theories on how one might defeat swearing on the rod. First, it is possible that the woman has another Oath Rod. Others were once said to exist, and it's plausible that one rod could release you from the oaths of another. Mesaana could have been holding one secretly. She could have taken the Three Oaths while holding our rod, then somehow used the other to negate those oaths before swearing that she was not a Darkfriend."

"Tenuous," Egwene said. "How would she have released herself without us knowing? It requires channeling Spirit." "I considered that," Seaine said. "Not surprising," Yukiri said.

Seaine eyed her, then continued. "This is the reason Mesaana would have needed a second Oath Rod. She could have channeled Spirit into it, then inverted the weave, leaving her linked to it."

"It seems improbable," Egwene said.

"Improbable?" Saerin replied. "It seems ridiculous. I thought you said some of these were plausible, Yukiri."

"This one if the least likely of the three," Seaine said. "The second method would be easier. Mesaana could have sent a look-alike wearing the

Mirror of Mists. Some unfortunate sister or novice, or even some untrained woman who could channel under heavy Compulsion. This woman could have been forced to take the oaths in Mesaana's place. Then, since this person wouldn't be a Darkfriend, she could speak truthfully that she wasn't."

Egwene nodded thoughtfully. "That would have taken a lot of preparation."

"From what Eve been able to learn about her," Saerin said, "Mesaana was good at preparation. She excelled at it."

Saerin's task had been to discover whatever she could about Mesaana's true nature. They had all heard the stories who didn't know the names of each of the Forsaken, and their most terrible deeds, by heart? But Egwene put little faith in stories; she wanted something more hardfast, if she could get it.

"You said there was a third possibility?" Egwene asked.

"Yes," Seaine said. "We know that some weaves play with sound. Variations on vocal weaves are used to enhance a voice to project to a crowd, and in the ward against eavesdropping indeed, they're used in the various tricks used to listen in on what is being said nearby. Complex uses of the Mirror of Mists can change a person's voice. With some practice, Doesine and I were able to fabricate a variation on a weave that would alter the words we spoke. In effect, we said one thing, but the other person heard another thing entirely."

"Dangerous ground to walk, Seaine," Saerin said, her voice gruff. "That is the kind of weave that could be used for ill purposes."

"I couldn't use it to lie," Seaine said. "I tried. The oaths hold so long as the weave was there, I couldn't speak words that I knew another would hear as lies, even if they were truth when they left my lips. Regardless, it was an easy weave to develop. Tied off and inverted, it hung in front of me and altered my words in a way I'd indicated.

"Theoretically, if Mesaana had this weave in force, she could have taken up the Oath Rod and sworn whatever she wished. 'I vow that I will lie whenever I feel like it' for instance. The Oath Rod would have bound her with that vow, but the weaves would have changed the sounds in the air as they passed her lips. We'd have heard her saying the proper oaths."

Egwene gritted her teeth. She'd assumed that defeating the Oath Rod would be difficult. And yet here was a simple weave capable of the feat. She should have known never use a boulder when a pebble will do, as her mother had often said.

"With this," Egwene said, "they could have

been slipping Darkfriends into the ranks of the Aes Sedai for years."

"Unlikely," Saerin said. "None of the Black sisters we captured knew of this weave. If they had, then they'd have tried to use it when we made them reswear the oaths. I suspect that if Mesaana does know this trick, she has kept it to herself. The usefulness of it would vanish once too many people became aware of it."

"Still," Egwene said. "What do we do? Knowing of the weave, we could probably find a way to check for it but I doubt that the sisters would be willing to go through the reswearing process again."

"And if it were to catch one of the Forsaken?" Yukiri asked. "It might be worth ruffling a few feathers to catch the fox hiding in the henhouse."

"She wouldn't be caught," Egwene said. "Besides, we don't know if she's using one of these methods. Seaine's logic suggests that it might be possible without too much trouble to defeat the Oath Rod. The actual method Mesaana used is less important than the possibility of the act."

Seaine glanced at Yukiri. None of the three had questioned Egwene's knowledge that one of the Forsaken was in the White Tower, but she knew they'd been skeptical. Well, at least they now understood that it might be possible to defeat the Oath Rod.

"I want you to continue your work," Egwene said. "You and the others were effective at capturing several Black sisters and unearthing the ferrets. This is much the same thing." Merely far, far more dangerous.

"We'll try, Mother," Yukiri said. "But one sister among hundreds? One of the most crafty and evil creatures ever to have lived? I doubt she will leave many clues. Our investigations into the murders have, so far, yielded very little in the way of results."

"Keep at it anyway," Egwene said. "Saerin, what have you to report?"

"Tales, rumors and whispers, Mother," Saerin said with a grimace. "You likely know the most famous stories regarding Mesaana how she ran the schools in lands conquered by the Shadow during the War of Power. So far as I can tell, those legends are quite true. Marsim of Manetheren speaks of that in detail in her Annals of the Final Nights, and she's often a reliable source. Alrom gathered quite a full report of living through one of those schools, and fragments of it have survived.