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Wolf Worm

Not yet published
Expected 24 Mar 26
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Something darker than the devil stalks the North Carolina woods in Wolf Worm, a new gothic masterpiece from New York Times bestselling author T. Kingfisher.

The year is 1899 and Sonia Wilson is a scientific illustrator without work, prospects, or hope. When the reclusive Dr. Halder offers her a position illustrating his vast collection of insects, Sonia jumps at the chance to move to his North Carolina manor house and put her talents to use. But soon enough she finds that there are darker things at work than the Carolina woods. What happened to her predecessor, Halder’s wife? Why are animals acting so strangely, and what is behind the peculiar local whispers about “blood thiefs?”

With the aid of the housekeeper and a local healer, Sonia discovers that Halder’s entomological studies have taken him down a dark road full of parasitic maggots that burrow into human flesh, and that his monstrous experiments may grow to encompass his newest illustrator as well.

"Kingfisher is not afraid to twist the knife."―The Washington Post

288 pages, Hardcover

Expected publication March 24, 2026

19224 people want to read

About the author

T. Kingfisher

57 books25k followers
T. Kingfisher is the vaguely absurd pen-name of Ursula Vernon. In another life, she writes children's books and weird comics, and has won the Hugo, Sequoyah, and Ursa Major awards, as well as a half-dozen Junior Library Guild selections.

This is the name she uses when writing things for grown-ups.

When she is not writing, she is probably out in the garden, trying to make eye contact with butterflies.

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Displaying 1 - 30 of 174 reviews
Profile Image for Jamie.
473 reviews769 followers
December 4, 2025
Trigger warning: insects. So many insects. All the insects. And not cute insects like butterflies and ladybugs … we're talking screwworms and botflies here. I'm not generally scared of bugs and am very much a “catch and release” sort of person when it comes to creepy crawlies in the house, but even I was a little squicked out by this book.

Also, can we take a moment to marvel over what a prolific writer Kingfisher is? I'm pretty sure this is the third ARC of hers I've read this year, and I know there was at least one other ARC that I never requested due to a (admittedly very short-lived) NetGalley hiatus. She's one of my favorite authors, though, so I'm certainly not going to complain.

Anyway, Wolf Worm is a creepy story about parasitic insects and the lengths people will go to in the name of science. You may or may not find this book particularly scary depending on how you feel about insects, but there's definitely some body horror and several pretty gross scenes. I enjoyed it and was decently invested in the outcome, but I have to admit that this isn't one of my favorite Kingfishers. There's nothing particularly wrong with it, but body horror has just never been one of my preferred types of horror.

But, still, I mean, it's Kingfisher. This book is well written and suspenseful and kind of horrifying in parts. It's a slow burn, especially at the beginning, but I actually really enjoyed learning about all of the different insects. While I had some vague knowledge that botflies and their larvae existed before reading this novel, I am now absolutely terrified of encountering one in real life. Fortunately, I live in the northern US where such things are less common, but I'm probably going to wear a full beekeeping suit the next time I travel to Central or South America. Better safe than sorry, that's what I always say (especially when it comes to maggots that burrow around in your flesh).

3.7 stars, rounded up.

Many thanks to NetGalley and Tor Nightfire for providing me with an advanced copy of this book to review. Its expected publication date is March 24, 2026.
Profile Image for Ricarda.
502 reviews324 followers
October 26, 2025
You know, I was just thinking that T. Kingfisher was missing some kind of bug/insect/vermin horror in her repertoire, and here it is. The book does take a while to really get going, though. At first we follow the scientific illustrator Sonia Wilson in 1899 as she comes to North Carolina to work for the bug specialist Dr. Halder. She is not looking forward to drawing all the insects that the doctor collects and studies, but she really needs the job and she just wants to do some good work. But already upon her arrival she hears something about the Devil living in the woods and about blood thieves mutilating bodies and Sonia might need to deal with more than she has signed up for. Her new employer also turns out to be a very rude man and the huge mansion he's living in is notably understaffed, so you can be sure that something sketchy is going on.

If you've read many other books by T. Kingfisher then chances are good that you stumbled upon the female-protagonist-goes-to-new-house-and-strange-things-start-to-happen formula before. I think I would be annoyed if any other author uses the same structure over and over again, but with her it just always works for me. The books are all different enough and they usually introduce cool, new concepts and intriguing plot elements. We've had curiosity shop dimension portals (The Hollow Places), weird bone animals (The Twisted Ones), underground rose children (A House with Good Bones), mean birds in the desert (Snake-Eater) and now we have different kinds of parasites in the woods. Kingfisher just always manages to hook me and she never fails to provide stories that I wouldn't get from anyone else. Her characters often have an unusual task to complete or they work an interesting job in general. Like, where else would I be able to read about a scientific illustrator making her way through a whole library of bugs? It was such an interesting mix of art and science, with Sonia being always close to an artistic crisis while also doing competent work although she doesn't have any deeper knowledge about bugs. The book was actually kind of informative in that regard. For one, I found out that wolf worms do exists and that it's another name for botflies. And if you know anything about them, then you can imagine that the book got bugs-under-the-skin gross and considering that that's the last place where bugs belong, it was disgusting. The YouTube algorithm decided once or twice before that I needed to see botfly removals and it was right, I needed to see that, but it also left me scarred and paranoid and with itchy skin. Same with this book.

I do have to say that the actual plot unfolds very slowly, especially for such a short book. I found it to be dragging around the 30 to 40 % mark, because it was mostly Sonia all by herself just starting to notice weird things. I think that she was kinda missing a sidekick and constant ally. There often is an animal companion or a hot handyman neighbor in Kingfisher books and this time the main character felt more isolated. She was friendly with the housekeeper and her husband and the local healer, but they weren't as present in the book, at least not during all the important plot points. There are plenty of unanswered questions that kept me reading through these slower parts, like the mystery of Sonia's predecessor who drew the most gorgeous illustrations but who no one ever talks about or the question of what her employer is doing in the woods in the middle of the night. So I wasn't exactly bored, but all the exciting things sure happened in the second half of this book where the entire story got better in general. There are many genuinely creepy moments and enough gross scenes that this book can confidently be called bug horror. It was great how everything tied into some local history and, surprisingly, some known supernatural creatures. I also really liked the ending and, after that, the acknowledgments where Kingfisher explains which parts of the story are real and what personal experiences led to this story. Overall, this was a solid new addition to the author's horror line-up, even if it wasn't a new favorite for me.

Huge thanks to NetGalley and Pan Macmillan / Tor for providing a digital arc in exchange for an honest review.

------------------------------
Pre-read: Wolf Worm? Umm, ok ... everything for you, Miss T. Kingfisher.
Profile Image for mj.
277 reviews175 followers
Want to read
July 16, 2025
do you SLEEP
Profile Image for CarlysGrowingTBR.
665 reviews74 followers
November 17, 2025
Book Stats:
📖: 288 pages
Genre: horror
Publisher: Tor
Format: eARC
Series: STANDALONE

General Thoughts:
Can I give a book more than five stars? Because this book deserves more than that. This book is horrific, suspense filled, and absolutely mind bending. The claustrophobia you feel, and the inherent dread that creeps across your skin throughout the duration of this book is unmatched.

If creepy crawly creatures give you issue then you definitely don't wanna pick this book up. But if you can stand some insect based body horror, you're definitely gonna love this. The story and characters were solid and even though you have an idea of what could possibly be happening throughout the story, it doesn't match up with how absolutely horrific and detailed the story actually is.

I can't even tell you the amount of dread and anxiety I felt reading this book. But in a good way that kept me entertained and reading quickly. This is absolutely a gut punch that you can't miss if you like Kingfisher.

Disclaimer: I read this book as a physical ARC from the publisher. All opinions are my own. This is my honest and voluntary review.
Profile Image for Nilufer Ozmekik.
3,124 reviews60.8k followers
January 3, 2026
Wolf Worm is the kind of book that creeps up on you slowly and then refuses to leave your thoughts. T. Kingfisher has a way of making horror feel intimate and personal, and this one settled under my skin in the quietest, most unsettling way.

We follow Sonia Wilson, a talented scientific illustrator living in 1899, whose entire career has been tied to her father’s reputation. After his death leaves her with nothing—no job, no security, no real future—she jumps at the chance to work for the reclusive Dr. Halder, illustrating his insect collection at his isolated North Carolina estate. It feels like a lifeline. It isn’t.

From the moment Sonia arrives, everything feels… off. The woods seem to breathe. Animals behave strangely. People avoid answering questions directly. And there’s the unsettling fact that someone held this job before Sonia—and no one wants to talk about what happened to her. Kingfisher builds dread in such a subtle way that you almost don’t notice it happening until your shoulders are tense and you’re holding your breath.
Sonia is such a strong, believable protagonist. She’s smart, anxious, observant, and painfully aware of how easily women—especially women in science—are dismissed during this time period. Her inner thoughts feel real and relatable, and they pull you deeper into the story. Seeing the horror unfold through her scientific and artistic lens makes everything feel more vivid… and more disturbing.

Fair warning: this book does not shy away from body horror, especially when it comes to insects. There were definitely moments that made me squirm. But it never feels gratuitous—it all serves the story and the themes of obsession, exploitation, and the terrifying cost of unchecked ambition.
The pacing is a slow, atmospheric burn, and while the final act moves faster than the buildup, the payoff is worth it. The tension tightens, the truth comes into focus, and suddenly everything clicks into place in a way that’s both horrifying and satisfying.

Overall, Wolf Worm is eerie, smart, and deeply unsettling in that uniquely T. Kingfisher way. It may not be my absolute favorite of her books, but it’s one that stayed with me long after I turned the last page. I’m happily giving it four stars and would absolutely recommend it to readers who enjoy gothic horror with substance and teeth.

Special thanks to NetGalley and Tor Publishing Group | Tor Nightfire for sharing another digital copy of this stunning horror novel by T. Kingfisher in exchange for my honest thoughts.

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Profile Image for Booksblabbering || Cait❣️.
2,042 reviews809 followers
November 29, 2025
The next time I see a big fly or a raccoon, I will scream.

Sonia is a thirty year old scientific illustrator who gets a job with a grumpy, reclusive naturalist. She spends her days painting bugs in an immense house that is only staffed by three and has only two residents. There are rumours about the devil living in the woods.

Sonia is anxious and tends to catastrophise.
This entire book is you questioning Sonia’s questioning as reader and heroine loses grip on reality.

Some thoughts burrow into your mind as thoroughly as a wasp larva burrows into an unsuspecting caterpillar. The trick, which I am still learning, is how to live without being devoured by them.

Like all of her books, T Kingfisher excels at creating a small, supportive community where the heroine can find solace.
There’s a cat and lots of yucky, creepy bugs.

This is probably the most body horror I have read from her, specifically in the last 35%. It is gross and I could hear the scenes.

I appreciated the vivid descriptions of water colours, even if sometimes it felt like an artistic exercise of Kingfisher as an ex-children’s illustrator.

The plot felt meandering and the horror felt quite contained. Whilst predictable, T Kingfisher had my attention with her writing.

Physical arc gifted by Tor.

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Profile Image for Becky Spratford.
Author 5 books801 followers
November 6, 2025
Reading for review in the January 2026 issue of Library Journal

Three Words That Describe This Book: Bug-Body Horror combo, Gothic with teeth, strong sense of place

Other words receiving votes: visceral, slow burn (but needs it to be 5 Stars), great details about being an illustrator by an illustrator, awesome protagonist with a perfect POV. Blood-letting monsters (referred to at the start and their possible existence-- if they have been eradicated etc-- is a level un unease that oversews and permeates the entire book-- not a spoiler)

Look Kingfisher is good. Nothing she writes is bad, but some are better than others and this one....wow!

I want to address a few people on her with early reviews who said that this one had too low a burn. I completely disagree. The pacing is what this story needs and in fact Kingfish makes a funny comment about it in the story itself. I'll get to that but first, Sonia is a young, awkward socially, female scientist and illustrator in the 1880s. She has spent her life studying flora mostly (but some fauna) with her father. She was his assistant. She lived this life. But when he died, Sonia was left high and dry. 1880s-- woman cannot just be scientists and scientific illustrators without a man to back them.

When Halder-- a reclusive, rich bug scientist needs an illustrator for his Magnus opus about necrotic parasites-- Sonia takes the job.

She is a city girl from the coast, moving sight unseen to the middle of the NC woods, to take a job where she knows no one and nothing. She lives there. She arrives and hears stories about the blood letting monsters in the woods. Is told to never go to alone, her room was clearly vacated by someone else who was the former illustrator quickly but also it's been a year etc....

If Sonia came in and started figuring everything out quickly, this book would have been terrible. If she was more than the awkward illustrator than she is, this book would have been terrible. She is nervous and at first obsessed with doing a good job so the book is all about learning about the people she lives with and her new boss and learning a bout bugs etc... all necessary. She is not a confident person to begin with so, when things start happening that are weird-- and they start just odd and get WEIRD-- she doesn't know what to do.

This leads to what I said about a small comment by Kingfisher that makes it clear she knows things are not moving super fast. Sonia gets to a shed in the woods that she knows hides some kind of secret and sees the lock. She actually comments on how she is not like one of those plucky heroines in a gothic novel and has no idea how to pick a lock. LOL. Reader-- it is not going to be easy for you or her.

When she does finally get in there-- WOW. What a discovery. And it is one of those discoveries that makes every detail Kingfisher carefully (but entertainingly) laid out in the story we read PAY OFF. Original and gross and so believable. There are human monsters here yes, but the supernatural ones are the ones that you are going to keep thinking about. These blood letters are not what you think they are.

Again every detail matters. If it went faster the book would fail. It is in the build up of the place and Sonia as a fully fleshed human where this book excels.

Sonia is a Gothic heroine, one who has to grow in confidence to save the day, but she NEVER uses skills others than those she has. And that is what makes it 5 stars. Feminist for sure, but not without bending to the restrictions of the time period.

The details about the bugs was great. Also, since Kingfisher is also an Illustrator, I loved that we saw her perspective on the job. Details about color and painting and caturing nature on the page. FASCINATING.

And of course-- these are parasitic necrosis bugs so we get the pay off-- it is gross and body horror and you will squirm and itch. Visceral in all the great ways.

It is Gothic in writing style and historical placement, but with the Kingfisher bite. There is so much I want to shout about that is great this book but I cannot because of spoilers.

For fans of mad scientist horror like Daughter of Doctor Moreau by SMG or Her Wicked Roots by Tanya Pell but with the visceral details found in the novels of of Nick Cutter (The Queen is bugs, but even The Troop works here).
Profile Image for ⊹ Amy ⊹.
107 reviews39 followers
November 9, 2025
Wolf Worm is a historical gothic novella that follows Sonia Wilson in her new position as a scientific illustrator. Her days consist of observing and drawing insects for her strange and secretive employer, but things take a dark turn when she discovers that his fascination with parasitic maggots hides something far more unsettling.

What I really like about Wolf Worm is the balance between grotesque scenes paired with humor. The writing is very descriptive, and since the main focus is insects, larvae and such, it makes for some very squeamish scenes. Additionally, most of the characters are quite likable and the story has some nice twists.

But the reason why I couldn't give it a higher rating is because the first half felt really slow. I had to push through repetitive scenes and monologues where Sonia just theorizes what's going on, sketches, and theorizes again. It's not until the halfway point that the story actually begins to move. For such a short novella, the pacing made it feel longer than it should have. I wouldn't have minded so much if the first half was at least filled with more interesting nature or insect descriptions, considering that we're following naturalists.

But with all said, T. Kingfisher continues being one of my favorite authors, so I'll always be excited to read her latest horror releases. Many thanks to NetGalley for providing me with an ARC in exchange for my honest review. 3.5 ⭑.ᐟ
Profile Image for Anna Kimbro.
244 reviews352 followers
November 11, 2025
Thank you to the publisher (via Edelweiss) for an ARC! I’ve read and enjoyed many a T. Kingfisher book before, and this was probably the most graphic of her horror’s so far. I don’t say that as a negative but certainly heavy on the trigger warnings for body and bug horror! Did I love it? Yes. Was it absolutely disturbing and gross? Also yessss.

Wolf Worm takes place in central NC a few decades after the Civil War. As someone who was born and raised in the area, the description of the setting was extremely accurate and perhaps a little too real, considering how the story progressed. Kingfisher does not shy away from heavier themes and balances the real-life evils of racism alongside a not-so-real buggy horror. I think there’s a lot of parallels here that a literary studies student would absolutely eat up, but getting into all that involves spoilers, so I’ll just say that I appreciated the balance of horrors both real and fictional with the charm and wit and sarcasm of our main character, Sonia Wilson.

Sonia is a wonderful lead for a horror - she’s smart but anxious, studious but a bit naive. Strong willed but a people pleaser. And educated enough to dismiss all the strange, not quite believable events until the truth sets in. She’s practical and her ability to explain away the odd things keeps you in constant suspense of “is it really something bad or just…really odd coincidences?”

To sum it all up, if you can’t do creepy bugs, this one really isn’t for you. I loved it and probably will never be able to read it again because it made my skin crawl. Literally. But for horror, that’s the point, right??
Profile Image for Azhar.
381 reviews35 followers
December 7, 2025
brother….ew.

this was nearly as disgusting as nick cutter’s troop.

ngl i was skeptical about this because the last few t. kingfisher books i’ve read haven’t really been the best. but this one? blew me away. the body horror literally made my skin crawl (reading about being trapped in that fucking shed in the dark gave me hives) and i flew through the pages, the story was pretty damn fascinating.

thanking the publishers & netgalley for the ARC.
Profile Image for Stella.
868 reviews344 followers
Want to read
April 21, 2025
MORE T. KINGFISHER

this time with creepy crawlies? We love a woman in STEM.
Profile Image for Abbys⚔️Book World.
262 reviews52 followers
October 28, 2025
⭐⭐⭐⭐ 4.5 / 5
✨ Netgalley ARC ✨
Release Date: 26th March 2026

📖 A Gothic Horror set in 1899, we follow Sonia a scientific illustrator without work, prospects, or hope. When the reclusive Dr Halder offers her a position illustrating his vast collection of insects, Sonia jumps at the chance to move to his North Carolina manor house and put her talents to use. On arrival, Sonia is warned of the devil in the woods.

Sonia discovers that Halder’s entomological studies have taken him down a dark road, and what happened to her predecessor, Halder’s wife? Why are animals acting so strangely, and what is behind the peculiar local whispers about “blood thiefs?” She finds that there are darker things at work than the Carolina woods.

✨ Review ✨
T. Kingfisher's prose, as always, is so atmospheric and vivid, for someone like me who hates bugs and insects, this one gave me the creeps. I wish I could show you what my face looked like while I was reading because man!!! Sometimes I didn't even want to look at the page. I DON'T DO BUGS ALRIGHT!!! Even butterflies give me the hebbie jebbies!

I adored that our FMC was an illustrator, as an artist myself, I always enjoy this, and I loved the descriptions of the artwork throughout. And I appreciated her struggles and feelings around feeling insecure about her work when looking at her predecessor's work. Plus the Naturalism brought such an interesting blend of art & science into the story.

This one definitely has a slow start, but we get mystery and intrigue from the get-go. The way she built the suspense and tension up was fantastic and I loved how everything came together.

The only reason this isn't 5 stars is because I would have liked the side characters to be a bit more present, like they are in other T.Kingfisher books. Arguably, them not being around as much does add to the creepy factor, though.
Profile Image for Mariana Brighton.
9 reviews1 follower
Review of advance copy received from Netgalley
December 27, 2025
4.5 stars! I really liked the setting and the mystery in this book but what i really fell in love with was the main character! She was just so well written, her voice as the narrator was very satisfying and she was very relatable as an anxious girl. Getting her inner, almost intrusive thoughts alongside her narration made for a very interesting and immersive reading experience.
Something else i really enjoyed was the center stage that (at least for the plot development part of the book) her career as an academic took! This is something that most of the time falls short for me and i'm happy to report this was not the case at all with this one.
The only thing that left me wanting more was the climax and the horror elements. It was very gory and definetely made me shiver but it didn't do what i wanted it to (although i can't quite put my finger on why).
thank you to netgalley and the publisher for this ARC in exchange for an honest review
Profile Image for L (Nineteen Adze).
388 reviews51 followers
nt
December 9, 2025
A friend just messaged me to ask about the "nt" shelf, so for anyone else curious: it stands for "no thanks" (which I should perhaps just spell out). I use this as a mostly neutral marker for any books that I'm not interested in reading so I can break the loop of looking up the same book four times and trying to remember why I haven't picked it up. The reasons are all over the map, from a friend whose taste I trust hating it to the author being tiresome on social media. This time around, it's the reviews talking about extensive body horror with bugs wiggling around inside living human flesh-- I'm squeamish and would rather read virtually anything else from Kingfisher. I'm only reading this book if I'm forced to by other Hugo nominators.
Profile Image for Rachel Martin.
485 reviews
July 25, 2025
I *think* this may be my favorite Kingfisher yet. As a person who loves studying insects, this one already had my heart from the beginning.

1899. Sonia arrives in a North Carolina manor house with a position illustrating a great big insect collection for a churlish Dr. Halder. Lucky for Sonia, the doctor has a particular interest in parasistic maggots that burrow into flesh...yeah, it gets pretty gnarly and I loved it. It doesn't take long for her to realize that shit ain't right around here.

Wolf Worm has the wonderful duality of being both grotesque, yet with a generous amount of dry and witty humor--one that Kingfisher nails time and time again.

I may be a total fangirl for Kingfisher, but it is not without merit. Initially this gave me Jane Eyre/Rebecca vibes (could just be me) mixed with Johanna van Veen's Blood on Her Tongue...but Wood Worm evolved into its own unparalleled beast.


Thank you to Nightfire for allowing me this incredible opportunity to read this so early. I am eternally grateful to you.
Profile Image for ezra.
510 reviews8 followers
October 22, 2025
Thank you to NetGalley and Tor for this ARC!

Rating: 4.5 Stars rounded up.

“Wolf Worm” is T. Kingfisher’s upcoming standalone horror novel, set in 1899 North Carolina. It is the story of scientific illustrator Sonia Wilson, who comes across a job listing posted by the reclusive entomologist Dr. Halder, asking for someone to illustrate his book on the parasitic insects he studies. Desperate to finally return to her profession of choice Sonia takes the job and travels to Dr. Halder’s remote mansion. But as her time there progresses she becomes increasingly aware of darker things going on. What happened to the previous illustrator? What do the local legends of “Blood Thieves” and devils in the woods mean? And why are the animals here behaving so oddly…

This was wonderfully terrifying, with Kingfisher’s signature light and fun writing style in juxtaposition. Really, the prime aspect that makes this book so awful is the body horror. The mood never really gets particularly creepy, even though there are definitely some scenes like that, but the real horror is in the descriptions of certain events.

I also really liked the characters in this, both good and bad. I will admit that I felt most of them were a little stereotypical, but not really in a bad way. Despite the somewhat formulaic nature of the characters they still feel pleasantly (or unpleasantly) real.

This is an incredibly difficult book to write a spoiler-free review for, I would even consider the description of this book a bit spoilery, so I will not go further into the plot of this one.

If you enjoyed Kingfisher’s other horror standalones you will 100% love this one too. This book is equal measures fun, heartwarming and terrifying, and if you’re like me and love body horror you will absolutely be unable to put this book down until you have uncovered all its secrets.
Profile Image for Korynne.
623 reviews46 followers
December 17, 2025
I’m a huge T. Kingfisher fan and I am excited to say that Wolf Worm is my new favorite horror novel by her.

This book is a historical southern gothic following a naturalist illustrator and features a lot of bugs. Lots of them.

I really enjoyed all the characters. Sonia in particular was so real and relatable; her every thought had me thinking, “Yes, exactly, I would be responding that way too!” I love seeing realistic characters in novels, especially ones who are aged appropriately (Sonia is 30) and whose actions actually make sense within the plot.

I learned a lot about bugs while reading this novel, and I even sat engrossed through a five-minute video of a botfly emerging from a squirrel corpse, which was both disgusting and fascinating. It will make sense once you read the book why you will feel the need to know what this process looks like.

Overall, I thoroughly enjoyed this story, and it was made even more interesting by reading the acknowledgements at the end because Kingfisher discusses where various details of the story came from. I loved the way the book ended, and I can’t wait to see what T. Kingfisher writes next.


I received a copy of this book from the publisher for review.
Profile Image for Meg.
56 reviews
November 29, 2025
Easily one of my new favorites!!! 🐝🪱🐛🪰🪲
Profile Image for Veronica Foster.
116 reviews9 followers
November 14, 2025
I always feel like I'm in good hands with a T. Kingfisher protagonist. They often lack the typical markers of main character status--beauty, confidence, that certain something that says "Chosen One"--but what they lack in glam they make up for in practicality and wry humor. The protagonist of Wolf Worm, Sonia Wilson, is no different, and I was grateful to be occupying her grounded perspective in a novel that gleefully oversteps my (admittedly low) tolerance for bugs and body horror. Wolf worm is apparently another name for botfly, a parasitic insect that, in larvae form, burrows into its host and feeds on their flesh before hatching. If this description feels like too much, consider another book: botflies play a starring role in this one.

The story begins with Wilson's arrival at a Southern estate where she has been hired to illustrate an entomology manuscript. Her new boss, Halder, is less than welcoming, the local gossip runs bloody, and a pervasive silence surrounds the fate of Halder's previous illustrator. As Wilson investigates, her sense of unease grows, and the novel takes a sharp turn toward horror once she puts the pieces of the puzzle together. There were entire chapters of Wolf Worm that I read with the kind of panicked nausea I associate with watching scary movies through my fingers; fans of folk horror will undoubtedly find much to love.
Profile Image for Bonnie.
1,461 reviews1,094 followers
November 26, 2025
3.5 stars



I've always said I have a concrete stomach. I'm unclear if it's because I'm getting older, or I've just been deluding myself my entire life, but I've learned that nothing could be further from the truth. This book certainly proved that.

Wolf Worm is a horror story set in a historical period, which doesn't seem to be done as often as it should, because it's my favorite type of horror. This was a disgusting little thrill-ride as soon as it got going (and it took well over halfway through before it did.) Kingfisher's writing style is on full display here with such expressive and gruesome descriptions that you may find yourself opting out of snack time. This is another evocative and entertaining tale from Kingfisher, although I don't think I'll be looking at bugs the same way anytime soon.
Profile Image for Faye Anne.
630 reviews17 followers
October 22, 2025
I think Wolf Worm is the creepiest T. Kingfisher book yet! I mean that in a very good way because I just binged it in one go and my heart was beating out of my chest the entire time! It starts with tension straight away because the protagonist is speaking with the benefit of hindsight - so when she says certain things right at the beginning, you know that things are going to go very, very wrong. From there, it only gets exponentially creepier, and I was just full of fear the whole time but couldn't stop reading. The faces that I must have been pulling on the train while reading this! I don't even want to say too much about the plot because going into it just seeing that little blurb and there being virtually no reviews out there at the time of writing meant that I had zero spoilers. So I went in fairly blind and just let the horror take me! I loved it!

Disclaimer: I received an Advance Reader Copy from NetGalley but this is my voluntary and honest review.
Profile Image for Jen.
490 reviews10 followers
October 18, 2025
A new horror from T.Kingfisher! How lucky are we! I absolutely love this author, but I love her horror novels best of all!

This is a historical horror novel set in North Carolina in the late 1800s. We follow an illustrator who has taken a job in a town with a dark past, with a reclusive doctor who studies insects. She is there to finish the illustrations for his book, after the previous illustrator left under mysterious circumstances. Our main character Sonia, has her reservations about this job, the strange doctor and the more challenging residents of the town. However, she needs the money and her circumstances won’t allow her to leave yet. She is also charmed by the sumptuous cooking of the housekeeper and chooses to overlook the odd occurrences, unusual wildlife and bug invested tap water.

This book was genuinely so scary! The author explores real insect life and some of the horrible things they can do to their hosts. There are some absolutely stomach churning moments. Slightly traumatising! There’s both body and insect horror in this book.

Insects are a key theme throughout the book, as is painting. With our main character being an illustrator, this is referenced regularly. I loved how these two themes were blended so seamlessly, and the respect shown to the reader. There’s a level of technical and scientific detail described, but it was done so effortlessly. It was described to an extent I could follow and understand, and appreciate the skill, without ever feeling like it was patronising or going over my head. This led to it being such a memorable read!

I read an eARC of this book on NetGalley so thank you to the author and the publisher. Terrifying and brilliant, highly recommend!
Profile Image for Annie Sullivan.
94 reviews
November 16, 2025
{Thank you to Netgalley and Tor Nightfire for the ARC!} T. Kingfisher has always been a master of horror, but this book is on another level of thoughtfulness, detail, and world-building. The incorporation of Sonia’s tendency to process things with the colors she’d paint them was a fantastic addition, and many authors strive to add a character detail like this but fail or forget to be consistent. Additionally, the historical background was extremely well researched and humanized by the addition of so many characters, all of whom were so distinct that the reader could’ve recognized them through dialogue alone. I will continue to read anything Kingfisher writes, and I am confident that they will all continue to earn 5 stars.
Profile Image for julia 。・:*˚:✧。.
568 reviews9 followers
October 19, 2025
Thanks to Tor for the eARC!

In Wolf Worm we follow Sonia Wilson, a scientific illustrator on her way to a job that offers her a house to live in, a wage and a way to use her talents. All she has to do is illustrate insects for Dr. Halder's next book. But then she begins to notice things that don't add up. And the stories the locals tell don't bode well either. And what is her employer willing to do in the name of scientific exploration?

God, what a strange, disgusting and brilliant way to write a vampire book. I really thought this was disgusting but in a way that added to the reading experience. I liked Sonia and the Kents and Kingfisher is truly brilliant at setting a scene and enveloping you in the atmosphere of her stories. I just liked this a lot and it made me feel similarly as 'The Hollow Places' did. And, god, I love that book.
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