The King of Attolia (Queen's Thief, Bk. 3)

Through scheming and outright theft, Eugenides has become King of Attolia, a king despised by his court, and apparently by his bride. On a whim, he has ensnared a naive young guard in the web of intrigue that surrounds him. Struggling to find his footing, the guard, Costis, knows he's a pawn. What he doesn't know is how the king means to play the game.