A Conspiracy of Kings by Megan Whalen Turner -- 316 pages
In The King of Attolia, Sophos went missing and was presumed dead, but he is in fact working as a slave for his own Baron, the one who arranged his kidnapping. A life of physical labor and no princely expectations is surprisingly satisfying for Sophos, who would have been content there -- if only he were not forced to choose between staying anonymous and returning to royalty. Remembering all he has learned from Gen, Sophos is going to change life for all three kingdoms and prove himself to be anything but weak and naive.
Of all Turner's characters, I find Sophos to be the most lovable because of his goodness and inability to tell a lie, accompanied by strength and durability.