The Stolen Court (Unbreakable Soldiers #3)

Bertin is a liar and a thief. Once an orphan on the street stealing purses, his life was forever changed when he saved a boy's life—and then became that boy to the rest of the world. But one lie always leads to another, and life as a Belemeren spy planted in the Engineer Corp has led him to the role of liaison in Ruemri, a kingdom he helped Ruemri's enemies steal.

His primary duty is to watch King Sesta, which means he is himself watched by the whole of Ruemri's royal court. For a man used to being overlooked and ignored, the situation is a living nightmare. That situation is further worsened when he receives word of an unspecified terrible event that is going to take place—and then the last person he expected arrives, bringing Bertin's past and secrets with him.