#55 in Horror
What Stalks the Deep
- 115
- Pages
- about 2 h
- Reading time
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About the book
What Stalks the Deep is a 2025 horror novella by Ursula Vernon, writing under the pen name T. Kingfisher. It is the third novella in the Sworn Soldier series. Elements of the plot are loosely based on the shoggoth, a fictional species that appears in the novella At the Mountains of Madness by H.P. Lovecraft.
Reading order · Sworn Soldier
Full order & progress →- What Moves the DeadStart hereWhat Moves the Dead–Not ranked yet
- What Feasts at Night
7.57.5 / 10 - What Stalks the DeepThis book
7.77.7 / 10
Where the score comes from
The sources average 8.0 across 90 ratings — not yet many, so the reader vote carries 33% of the weight and the rest pulls toward the Horror average of 7.5. That is how 7.7 comes out.
| Source | Average | Ratings | Weight |
|---|---|---|---|
| Hardcover | 8.0 | 90 | 100% |
Reader voices
The most-liked reviews on Hardcover (credited to their authors).
“I love how each of these are based off an existing Gothic horror story! I knew this one was Lovecraft pretty quickly, though with the West Virginia cave setting my original thought had been Whisperer in Darkness. Now that I'm all caught up, I can't wait to see what Kingfisher does next with this series. 😁”
Frequently asked
What is What Stalks the Deep rated?
7.7 out of 10, from 90 reader ratings across 1 independent sources.
Is What Stalks the Deep worth reading?
Readers give it 7.7/10 from 90 ratings, which puts it ahead of 65 % of the Horror shelf.
How long does it take to read What Stalks the Deep?
About 2 hours at an average reading pace — 115 pages.
Where does What Stalks the Deep rank?
#55 in Horror on the current snapshot.
Which volume of the series is What Stalks the Deep?
Volume 3 of 3 in Sworn Soldier. The full reading order is one tap away above.
How long is What Stalks the Deep?
It has 115 pages — shorter than 95% of the ranked books in Horror.
If you liked this
The same shelf — Horror — and a score of 7.7, the closest to this book.
