Children of Ruin

An engineer teaches octopuses to run his terraforming equipment because he likes them, and then discovers what he has made.

Tchaikovsky sells the first book's pleasure and bolts a horror novel to the side of it. The generational uplift material is here, warm and patient and funny about the difficulties of raising a civilisation by accident. Alongside it runs something found on another world that gets into bodies and speaks through them. Both halves are good. They were not built to the same specification.

Two modes have to cohabit or the thing comes apart in the reader's hands. Octopus comedy and body horror are separated by a chapter break and nothing else, and either the join reads as deliberate contrast or she is holding two novels stapled together. No third reading holds up through the middle section.

Two clocks is the problem underneath that. Children of Time worked because everything ran on one schedule, spiders getting cleverer while the ark ship got more desperate, both curves bending towards the same collision. Here the horror thread runs fast and the development thread runs across generations, so the patient material keeps getting interrupted by the urgent material. Patience was the pleasure. This book will not let it accumulate.

Octopus cognition is the finest invention in the sequence. A mind in three parts where one layer feels, one layer acts, and one layer explains afterwards why the other two did what they did. Tchaikovsky commits to the consequence, which is a species that is brilliant, impulsive, emotionally incontinent and constitutionally unable to plan.

The Nod thread does something the genre rarely attempts. It writes an alien that is not misunderstood, not tragic and not negotiable, an organism whose only mode of relating is to become you and keep talking. Horror in this register usually wants a metaphor. This one declines to be about anything.

Kern is still here and still the best joke in the series. An uploaded scientist reduced to a personality running on borrowed substrate, contemptuous of everyone, and functionally the only crew member with institutional memory. Her exasperation is load-bearing.

Portia's people have inherited the ship and the responsibility, and Tchaikovsky is good on what that does to them. Spiders raised on cooperation meeting something that cooperates by absorption, and the horror lands hardest on the species least equipped to imagine bad faith.

Communication is what the novel is really about, and it is pessimistic on the question. Two intelligences can exchange signals for centuries and understand nothing, and the novel keeps demonstrating this from different directions rather than asserting it once. That accumulation is the argument.

Body horror in a book about first contact is a legitimate move and it is also a filter. Whoever arrived for the gentle xenobiology of the earlier volume will find several sequences she cannot unread, and Tchaikovsky does not warn her.

Where the earlier book earned its scale slowly, this one has scale from the first page and spends the length trying to justify having it. The result is broader and less shapely, which is the usual cost of a sequel that has to be bigger.

Something is out there and it wants to talk. That is the frightening part.