More 3.5 stars than 3 stars, this novella was a fun romp through demon infested waters. The unnamed narrator is morally gray, and he tells you from the start that you're not going to like him. Which, of course, made me love him. The page count is short, but there's so much depth packed into it that you wouldn't notice how short it was if it wasn't so damn easy to read that you're finished in a heartbeat.

The narrator's job is to hunt demons. There's 72,936 of them on Earth and they can't be killed, but they can be banished. The nature of his job means that, often, he has to make the tough decisions. He'll be the first to admit that he does bad things for the purposes of good, and I love that he's not even that apologetic about it. The plot of this novella revolves around our narrator realising that demons have infiltrated the smartest man in the world, Prosper, a genius raising a boy king. It's his choice to make, let them live and let Prosper create great technology and science and the boy king survive, or banish the demons and risk all their lives.

Prosper's Demon is dark, violent and absolutely hilarious. It's also full of twists and surprises as the narrator is so entirely unpredictable you can't quite be sure which side he'll fall on when you hit the end of the story.