A gripping hard science fiction mystery with elements of cyberpunk, space opera, espionage, and military science fiction. In a nutshell, the novel is about UN Peacekeeper Major Catherine Li, who is sent to a mining colony world known as Compson’s World. A famous researcher, Hannah Sharifi (“the most prominent theoretical physicist in UN-controlled space… [h]er equations made Bose-Einstein transport possible, had woven themselves into the fabric of UN society”), was researching on the world that is home to the quantum entangled crystals that make reliable, commercial-scale FTL interstellar travel possible but died under mysterious circumstances. Li is sent to solve the mystery of her death but primarily to find the missing dataset she was working on, one that could change the balance of power between UN-governed human worlds and the Syndicates (the two engaged in an interstellar cold war). As an added wrinkle, Li was born and raised on Compson’s World, with great difficulty escaping the rough mining planet through means she has kept hidden and if discovered, could cause her a lot of problems. Li is operating alone, unsure of if she can trust planetary authorities and the company, Anaconda Mining Corporation or AMC, who run the mines she has to investigate in, no one eager for the UN to be looking at anything too closely. This all while finding out that it looks like Sharifi was murdered and people might start to see that LI and the researcher are clones, something Li took great pains to hide and again, would be the cause of problems for Li.
Author Chris Moriarty has some extremely impressive worldbuilding, as the novel has so many great elements, including the more times people make faster-than-light jumps, the more memory they lose in each jump (having to back up memories in hardware or have them restored, maybe never sure they can entirely trust the backups or restorations, with occasionally lost memories resurfacing later), the existence of Emergents (AI that have become sentient and independent, with one Emergent named Cohen a vital part of the story and a friend and maybe lover to Li), shunting (taking over the body of a person, either by AI or another human, with the human not always willing), terraforming (with Compson’s World the only planet so far encountered with any signs of complex life, though when humans arrived was extinct except for cold, windswept algae tundra though the planet has vast coal deposits from formerly abundant life, but it is a world being made more Earth-like), an extinct Earth (evacuated and essentially uninhabited and lifeless owing to a climatic disaster, much of humanity existing in a huge space station essentially ringing Earth), constructs (genetically engineered lines of posthumans designed to do various jobs, who with considerable human help rebelled for independence but lost, those remaining in UN-controlled space essentially second-class citizens with very rare exceptions such as Sharifi, the rest escaping to form Syndicate Space, worlds controlled and populated by various syndicated genelines), streamspace (as opposed to realspace, a complex virtual world that overlies the physical world that is “more than the sum of things humans have put there” including not only Emergents but other types of AI and areas that don’t correspond to realspace, with whether or not one is connected to streamspace an important plot element), and ceramsteel (a number of people like Li have internal wirings and support mechanisms that give them added durability, speed, and other abilities but come with a cost, including making them valuable for their parts or enabling those possessing them use their biological bodies past the breaking point).
Some reviewers noted the central science fiction plot mystery can be figured out fairly early on and largely I agree the main mystery of the book can be figured out given the clues the author gave, though the particular’s of Sharifi’s death weren’t obvious nor who were the main villains. The book can be read as a standalone as it has a great ending point, but I see that is book one of a trilogy and there is definitely potential for more story. The worldbuilding is rich and amazing, including biological and cultural aspects of Compson’s World I didn’t mention above. It was a little strange to read a novel largely set on a mining colony or in the mines themselves, with elements that wouldn’t have looked out of place even on 19th century Earth, but the setting was vital to the overall story and the interstellar setting of the novel. The AI character Cohen was amazingly complex and one of the better posthuman type characters I have seen in my readings, embracing what it might be like to interact with someone with abilities and an intellect well beyond that of normal humans. The book has some violent scenes especially towards the end.