Through the mediation of Demaratos, Alexander and Olympias return to Macedon, but there is now a clear faction which supports them, and a second faction which supports Attalos. Philotas, one of the young men in Alexander's circle, is recruited by his father, the general Parmenion, to spy on Alexander for Philip. Olympias' own spies learn that Philip plans to marry Arridaios, the developmentally disabled son of a minor wife, off to the daughter of a ruler on the edge of the Persian Empire. Convinced that the prestigious marriage is meant as a slight to him, Alexander proposes himself to the foreign ruler as an alternate bridegroom through the secret negotiations of Thettalos, an admiring actor.