Book Review: The Liminal Zone

Nina Buraca, investigator of possible signs of alien life, has heard tales of mysterious events on Pluto's moon Charon, where a science outpost studies extrasolar planets. Facing opposition from her colleagues, she nevertheless travels from Earth to uncover the truth. Once there, she finds herself working with a team of people who have many secrets. To make progress, she has to take sides in an old dispute that she knows nothing about. Can she determine who – or what – is really behind the name "selkies" that the station's staff have given to this uncanny phenomenon?

The Liminal Zone is the third book in Abbott's Far From the Spaceports series, and like the others, it's a standalone. While the first two books (Far From the Spaceports and Timing) featured the same characters, this one introduces us to a whole new cast with a completely unrelated plot. It isn't necessary to read those first two to read this one, but if you like The Liminal Zone, you should check out the others.

For those unfamiliar with this series, humanity has colonized the solar system, and artificial intelligence (AI) has come to fruition. Space travel has improved, it still takes weeks, sometimes months, to travel from one celestial body to another. As such, there's a bit of self-governance each place enjoys, and adults are very much in charge. No dystopia here.

AI entities work alongside humans and have personalities that are barely distinguishable from them. Just as the gods of Mount Olympus suffered from the same emotional shortcomings as humans, so too do Abbott's AIs. As such, people and "personas" work together, live together, and form friendships. They're each other's besties. When Nina announces to her persona, Aquilegia, that she's headed to Charon to investigate the Selkie mystery, the latter balks at going. A fight ensues, and the two of them break-up. As theirs had been a six-year relationship, Nina is devastated and feels very much alone.

All the while that Nina investigates the mystery, her encounters with other people and personas and exploration of the Charon settlement and surface, she can't help but reflect on her feelings. She's the outsider trying to fit in among a group of people. Some are paired up; some work alone. Some are friendly; some stymie her every move to make progress on either the mystery or fitting in. The story is very much an introspective journey as well as an investigative one.

Having a character journey over 30 AUs to find herself may seem unusual, but is it really any different than someone traveling halfway round the world? You go where the path leads you. I confess that I was more interested in the secrets Nina strove to uncover than her personal journey, but I chalk that up to being in a healthy relationship for 26 years. One last thing I'd like to point out is that I haven't read this much about characters drinking tea since Ancillary Justice. I kid. All of this makes for a charming read. Having taken us to the asteroid belt, Mars's moons, and now distant Charon, I'm wondering where Abbott will travel to next.

4 stars

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