Surprisingly, it doesn't end on a cliffhanger, despite opening up new adventures after book 3 "conclusion".

Set mostly on one planet or in orbit around it and felt rather claustrophobic to me.
4 povs: Holden, Basia (father of child in cohort with Mei in prior book, escaped Ganymede and has settled on new planet, working to keep corporation off planet), Elvi (scientist (biologist) from corporation), and Havelock (2nd in charge of security for corporation - and Miller's old partner from book 1).

Elvi is ridiculously annoying to read. Her crush on Holden is painful and despite an explanation for it later and her coming to her senses, I REALLY didn't like her.