You head into the tower and upstairs. Nessian gives you no trouble, and you find the codebook right where he told you it would be. Yargos confirms that it is the correct book.
Lerissa asks of Yargos, "What signal do we need to give to stop this mess?"
When Nessian speaks and tries to exit, she will again block his path, "You seem way to eager to leave our pleasant company...why is that?"
"If you return to this city," calls Abraxis after Nessian, his voice even and grim, "I will end you." He let's the threat hang in the air for a moment, and then turns at Yargos' exclamation. Abraxis starts toward the window, but seeing Leif beat him too it, he simply waits, ready to assist as necessary.