Spoilers ahoy! No, seriously, read at your own risk. I tried my best to not reveal key points but yeah, it's spoiler land.
Assassin's Apprentice by Robin Hobb Young Fitz is the bastard son of the noble Prince Chivalry, raised in the shadow of the royal court by his father's gruff stableman. He is treated like an outcast by all the royalty except the devious King Shrewd, who has him secretly tutored in the arts of the assassin. [...]