I’m going to start off by saying I’m already a big fan of Ilona Andrews (pen name for husband and wife writing team). I’ve been following their Kate Daniels series for years and dip into their other writings from time to time.
What I love most about their writing, and the biggest strength of Clean Sweep, is their world building. They come up with really interesting ideas and build really strong, realistic worlds. As realistic as you can be with magic, werewolves, and vampires.