This is super short, which is why it's probably free. I didn't know about this until after I read The Knife of Never Letting Go. Normally, prequels should be read before the first book but I think this was much better after having read book 1. If I had read this first, it would have ruined so much of the mystery and suspense of The Knife of Never Letting Go.Though this novella is short, it does let you get to know Viola better. It also really helped getting to understand their world better.Rating 3/5Download if you like the series. I would strongly advise you to read book 1 before you read this though.