With the end of Crossroads of Twilight leaving us hanging on a message from Suroth asking Rand to meet with the "Daughter of the Nine Moons," I've come to the conclusion that this is all an elaborate trap to gain mastery over the Dragon Reborn.

Let's look at what we know about these three first, and see what connections can be established.

Suroth is Darkfriend High Lady, although only we seem to know that. It is likely that she led the Return by decree of one of the Chosen, probably Semirhage. She was last seen in Ebou Dar speaking with a Seeker for Truth about the disappearance of the Daughter of the Nine Moons, Tuon.

Semirhage, who I and most others seem to believe is Anath, rose to power quickly in Seanchan, replacing Tuon's last so'jihn after an "unfortunate accident". Her description and mannerisms match Semirhages. After Tuon's disappearance, Suroth muses that Selucia also disappeared... and Anath had went into seclusion. If Suroth is under the command of Semirhage, she obviously doesn't know that Semirhage is also Anath. (Does Semirhage appear to Suroth in Illusion too, perhaps?)

Finally, we have Liandrin, who was chased out of both Tear and Tarabon by the Thrilling Threesome (Nynaeve, Elayne, and Egwene). After her failures, she was Compulsed by Moghedien after an uprising and her will broken by Temaile. When the Seanchan overtook Amadicia, she was taken as a da'covale by Suroth, who happened to remember her during Egwene's kidnapping in the Great Hunt.

With all of that in mind, we now have the situation that Rand is in. He is to meet with Suroth, but she wants him to also meet the "Daughter of the Nine Moons." Now, I highly doubt that Tuon managed to get captured at the end of the book after all that Mat had done to keep her safe, so I think that Suroth is putting up false figureheads to lure Rand to her. When Rand goes to meet the pair, he will most likely find Suroth with the male a'dam or an all out One Power attack.

However, what if Suroth has to use someone as the Daughter of the Nine Moons to convince him to meet? Both Semanath and Liandrin are with her, and both women would work for the task. Liandrin -was- shielded with a knot so intricate that ... "only one of the Forsaken could undo it". Now, isn't it ironic that she's under Suroth and alternately Semirhage? Perhaps it wasn't so hard for her to get unshielded after all.

Finally, my theory is that when Rand meets with the Daughter of the Nine Moons, either he or someone with him (Nynaeve, I hope!) might recognize Liandrin as a simple da'covale, and link her to Suroth as a Darkfriend. BUT... not before he is leashed by Semanath, who is posing as the Daughter of the Nine Moons inconspicuously. There, he will be made to literally kneel by the Chosen to her will, and thusly to the "will of the Throne" as she is technically the Daughter of the Nine Moons to those present (ironic, eh?). Therefore, we fulfill Rand's kneeling to the Crystal Throne, the portents of the male a'dam, and one other theory that I will tack on here. The nine impossible tasks Foretold by Nicola.