Quite possibly the best book in the series thus far. 
 The crew of the Rosie finds themselves taking off in different directions. Alex, Amos, and Naomi are all drawn back to the lives they lived before the Canterbury. The back story of these main characters (who have never before had POV chapters) is explored as Earth literally goes to sh!t. Holden still plays a major role but isn't at the locus of the story, which gives this book a freshness usually not seen by the time the author gets to book five. Bonus points: Avasarala says "donkey balls" and gets creative with ideas on the uses of cattle prods. 
 Couldn't put this down. Expanse fans this book is addictive.