The thing that I really love about Something More Than Night is it's completeness. Where Jim Butcher might throw "Noir" and "Magic" at the wall in order to see what sticks (with admittedly fun results), this book is utterly deliberate right through to the end; what seems like a genre-quirk becomes utterly essential to the plot, and you can't shake the feeling that a very clever writer is at work. 
 This is fundamentally a hard-boiled detective novel, and those elements are right on the nose, so really don't go in expecting anything else. The characters are sometimes charming, often funny, but I don't think I'd call any of them likable, and they're not trying to be. The prose is great, and there's a complexity of plot that Raymond Chandler would be proud of. Most importantly it really, really works as a detective story - never predictable, and you don't feel like the author has magicked the solution out of the air. 
 As for the more fantastical stuff, Tregillis has successfully blended Judaeo-Christian mythology with various concepts from modern Physics to come up with a satisfyingly smart and deep world, full of supernatural beings and extended metaphors about quantum entanglement. Possibly this will be off-putting for anyone who hasn't read, say, a popular science book recently, but it's fun, smart, and allows the author to be properly thought-provoking from time to time.