Okay, wow, this book had me discussing and screaming at it a lot. People die. People nearly die. Some of those deaths I was not at all okay with.
Bull and Sam. And nearly Naomi. I swear I'd have stopped reading the book and the series if Naomi had died.
Discovering the background of the protomolecule, the history, the vast other worlds out there, and the threat was awesome. Seeing both personal and political interactions in the crisis in a closed-off environment, too. God this series is brilliant.