Gentian line is one of the most powerful forces in the galaxy - one of the 'lines' of clones (called shatterlings) who have been traveling the galaxy since the start of the star-faring era six million years ago. The shatterlings of Gentian line travel alone, but they come together for a reunion every 200,000 years to compare what they have seen on their latest circuit around the galaxy.Campian and Purslane are two shatterlings who have fallen in love and are traveling together against the rules of the line. They are running late to the upcoming reunion when they get a terrifying message - someone has attacked the reunion and killed almost all of the Gentians. Now it is up to them to determine who, or what, their enemy is before the entire line is wiped out.This is a book that succeeds because of its incredible world building and engrossing plot. You are slowly but steadily introduced to new mind-bending concepts and mysteries, and learning the answers to those questions over the course of the book is a real pleasure. The scientific concepts and technologies that power the world (which are all rooted in real science) are also incredibly fun to explore, and are one of Reynolds strong suits - perhaps not surprising for a writer with a PhD in astrophysics.That said, if you are looking for dialogue-driven writing or unforgettable characters, this might not be the book for your current moment. It also slows down a bit in the middle of the book, but the final quarter picks up the pace again, and is propulsive, gripping, and answers all the big questions in very satisfying ways. This is a stand-alone novel, which is somewhat rare for space operas. If you want to enjoy a big, galactic adventure without the commitment of a long series, this is definitely up your alley.As always, we also recommend and discuss some similar books if you are looking for more great books to read. This week we recommend:Fire Upon the Deep by Vernor Vinge,The Culture series by Iain BanksAnd Hyperion by Dan Simmons If you'd prefer to watch the video version, you can find it at this link.