This was a very fun and interesting book to read as a classic space opera set around Mars and Saturn. We have friction between Earthers (those who grew up in a gravity well), Belters (those who grew up on some kind of space station) and Martians (those who grew up on Mars. The book tips its hat to the detective noir with a mystery plot. The book adds some elements of the unknown with alien zombie goo, a proto-life form that mutates a human 'host' that the evil scientists have gotten their hands on. And the book addresses morality of life from two different view points - and both are right.
An absolutely fascinating read. I wouldn't be surprised if this ends up on the Hugo Nomination List. I will be disappointed if it doesn't. Either way, I'm looking forward to the authors next book in this universe.