Review: What Stalks the Deep

What Stalks the Deep by T. Kingfisher
My rating: 5 of 5 stars

This third book in the Sworn Soldier series centers on Alex Easton, a non-binary retired soldier from a fictional European country, Gallacia, who has a habit of stumbling upon alien and/or supernatural beasties. The first in the series, What Moves the Dead, is a chilling retelling of Poe's "The Fall of the House of Usher" with a creeping sentient fungus that can puppet dead bodies. What Stalks the Deep, inspired by--according to the author's afterword--H.P. Lovecraft's "At the Mountains of Madness," moves the series in an interesting science fictional direction.

Alex and their friend Angus come to America at the request of Dr. James Denton, a character from the first book who stood beside Alex during the horrors of the "tarn" (the lake infected by the fungus in the first book). Denton has seen something he cannot handle, and urgently asks for Alex's help. Denton's cousin Oscar has disappeared in a played-out old coal mine in West Virginia, after writing Denton letters saying he had discovered something very strange within. Denton went to the mine but did not venture very far inside, as he said it just "felt wrong," the same way the Ushers' house and the tarn did. His first thought was to reach out to Alex for help, and despite their strong wish to run away from anything like the tarn, Alex comes.

The mystery of the Hollow Elk mine turns out to be an ancient hive-mind jellyfish-squid creature who has spent thousands of years asleep at the bottom of the mine, only to be awakened by modern blasting during the search for coal. Said blasting calved off a section of the creature, a Fragment (which is what it names itself) who cannot reunite with the "wholeness" and ventures into the human world to search for ways to return to the rest of its kin. This creature is a boneless, gooey shapeshifter who must use sticks absorbed into its body to walk, and in one memorable scene, it skitters along the ground with a human-looking torso atop a slimy centipede body with many legs. It is also intelligent and followed the human miners through the mine while it was being worked, eventually learning to read and write.

Fragment is the most interesting character in the entire book, as it helps Alex and their friends defend themselves against Sentry--another chunk of the hive mind originally intended to guard its people, who eventually came to want to be its own "wholeness." To survive, Sentry ended up eating organs from the bodies of nearby townspeople and impersonating a dog. Fragment talks to Alex and their friends about being human, and persuades them to see it as a person instead of a monster. At the end, with Sentry burned and gone, Denton and Angus help Fragment reunite with its wholeness, and the former owner of the pseudo-dog agrees to stay and guard the mine against any further intrusions.

Along the way, we learn a lot about coal mines and their various kinds of "damp," one of which plays a crucial role in the climax. As usual, Alex Easton is the down-to-earth practical sort of character with a dry wit at which the author excels. I really liked this, however, for the unexpected SF turn to the story. It's a nice exploration into the mind of an ancient alien sea creature. I hope, if there are any further books in this series, the author keeps that science-fictional bent.

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