The Ashglass Throne

A half-blind lamp-trimmer discovers he is the bastard son of a murdered king—and the conspirators who killed the royal family need him on the throne as their puppet. Dunstan Sedge has forty days to learn the suffocating rituals of goblin royalty, uncover who engineered the cave-collapse that slaughtered his father, and prevent a foreign army from pouring through the gates of the underground kingdom of Drennt. His only allies: a deaf bodyguard who refuses to flatter him, a young clerk willing to risk everything, and an archive full of secrets no one else thought to read.