When I read this it was titled Rivers of London, but coming to Goodreads, I discover that's the title of the graphic novel. Confusing! However; this book under any title is just wonderful. Ignore the marketing bylines - Rivers/Midnight is rather more Harry Dresden than Harry Potter, but it's also it's own man. I enjoyed it a great deal & look forward to making my way through the rest of the series. Good job, Aaronovitch.