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Sworn Soldier #3

What Stalks the Deep

T. Kingfisher

4.44

An instant New York Times, USA Today, and Indie bestseller!

The next installment in the New York Times bestselling Sworn Soldier series, featuring Alex Easton investigating the dark, mysterious depths of a coal mine in America

Alex Easton does not want to visit America.

They particularly do not want to visit an abandoned coal mine in West Virginia with a reputation for being haunted.

But when their old friend Dr. Denton summons them to help find his lost cousin—who went missing in that very mine—well, sometimes a sworn soldier has to do what a sworn soldier has to do...

At the Publisher's request, this title is being sold without Digital Rights Management Software (DRM) applied.

HorrorFictionScience FictionFantasyAdult
Pages
211
First published
September 30, 2025
Language
English
Edition
Ebook

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Shelved by 3 Litcadians

Reviews

  • Finished December 22, 2025

    4.5 ⭐ rounded up. I really enjoyed this whole series! I love how each one was slightly different, but all equally creepy. Vibes were definitely there the whole time.

  • Finished June 12, 2026

    Wow wow wow I am baffled. This series has absolutely knocked my socks off, T Kingfisher (Ursula) is an absolute genius, this book was perfectly creepy - made even better (or worse) by the mines and caves and tight spaces - and I absolutely love how the main horror element is something seemingly natural! I already want to read the trilogy again