I was worried I was wasting an Audible credit in this title...glad to report that book 4 went above and beyond expectations! The crew of the Rocinante is back and better than ever. 
 I feel like the authors took the criticisms said about book three to heart, because none of those mistakes were repeated. The characterization in the novel was excellent, the plot compelling, and fan favorites are all featured, even if only in the prologue and epilogue. Well done!!! 
 In particular I'd like to compliment Corey for finally giving Holden some depth. After several years of being the cowboy in the white hat, he's starting to show some nuance. Other good points concerning the characters: I loved the fact that the new POV characters weren't all new after all. Havlock was briefly introduced in book 1; Baja in book 2. Bringing in their backstories made them more interesting. Elvie was the only brand new POV. She's book smart yet clueless when it comes to matters of her heart. She was vulnerable in a way I could relate to, and that was fun to read. 
 I found the plot compelling as well. We're beyond the rings at this point, and if you think that's a bad idea, your absolutely right. This is the tale of shit going wrong and human ingenuity. Think Conquistadores in outer space. 
 I'm torn between 4 and 5 stars. Going with 4 since I wanted more Avasarala. May change it after reading future volumes...who knows? 
 Anyhow I highly recommend this volume to fans of books with lots of world building, fans of space opera, and Expanse TV shows fans that are curious about what to expect in seasons to come.