What Feeds Below by Tatiana Schlote-Bonne: A lush, terrifying descent into the Void

Tatiana Schlote-Bonne’s What Feeds Below is an immersive fantasy horror novel filled with lush worldbuilding, gruesome monsters, claustrophobic environments, and enough heart-pounding action to make you feel as though you’re trapped alongside its characters in the depths of the earth.

At the edge of the City of the Void lies a massive chasm that stretches miles underground. Known simply as the Void, its layers are filled with monsters, carnivorous plants, and dangers that become increasingly difficult to understand—and survive—as travelers descend. For Petra and Jade, two orphaned best friends living in the city’s slums, the Void is also a way out. They make money by guiding tourists who are willing to risk their lives in search of whatever treasures might be waiting below.

Petra is cautious. She sticks to the upper levels, where the dangers are at least somewhat familiar. Jade is more ambitious, convinced that the bigger rewards waiting deeper in the Void are worth the risk. When Jade persuades Petra to take a job that will take them farther down than they have ever gone, Petra agrees because their friendship means everything to her. But when the expedition goes horribly wrong and Jade disappears, Petra has no choice but to venture into the deepest levels of the Void to find her.

The worldbuilding in What Feeds Below is every bit as lush as its fabulous cover design suggests. Schlote-Bonne has created a world that feels enormous, strange, dangerous, and completely unfamiliar, yet she avoids one of the most common pitfalls of constructing an elaborate fantasy setting: overwhelming the reader with information.

When authors create a completely new world, there can be a temptation to explain everything immediately—the history, geography, political structures, mythology, terminology, and rules of the setting—before the actual story has had a chance to get moving. That kind of front-loaded exposition can make even an interesting world feel like homework. What Feeds Below takes a much more effective approach. Schlote-Bonne introduces details as Petra encounters them, giving us enough information to understand what is happening without stopping the story to explain everything that came before it.

That made a huge difference for me because I felt like I was discovering the Void rather than being given a guided tour of it. Every new layer brought new dangers and new questions, and the gradual revelation of this strange environment kept me invested in what Petra would encounter next.

It also made the book surprisingly claustrophobic. The action starts ramping up fairly quickly—around the 20 percent mark—and once Petra and Jade begin descending into the Void, the novel develops a relentless sense of danger. There are monsters. There are carnivorous plants. There are narrow spaces and unfamiliar environments. And then there are the things Petra doesn’t yet understand about the Void itself.

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I have a fairly overreactive imagination when it comes to horror, and there were moments when What Feeds Below got to be a little much for me. I was so completely immersed in Petra’s experience that I could practically feel the cave walls closing in around me while I was sitting safely in my chair reading. That’s a testament to how effectively Schlote-Bonne creates atmosphere, although readers who are particularly sensitive to claustrophobic settings or body horror may want to know what they’re getting into.

The horror works particularly well because the Void isn’t simply a dark place populated by things that want to kill you. It feels like an ecosystem, with its own logic and mysteries. The deeper Petra goes, the more she realizes that the dangers she thought she understood are only a small part of what is actually happening beneath the city. That sense of discovery gives the horror another dimension: you’re not just waiting to see what monster appears next. You’re trying to understand the place itself.

At the center of all of this is Petra’s determination to find Jade. Their friendship gives the story an emotional anchor amid all the darkness and danger. Petra’s willingness to keep descending, even when every instinct tells her to turn back, makes the increasingly terrifying journey feel personal rather than simply a series of increasingly elaborate obstacles.

What Feeds Below is the kind of novel that makes you feel physically present in its setting. I could see the Void, feel its oppressive spaces, and imagine the creatures lurking just beyond Petra’s field of vision. And because the author resists the urge to explain everything at once, there is always another piece of this world waiting to be discovered.

If you enjoy fantasy horror with inventive worldbuilding, body horror, monsters, and a protagonist forced to venture somewhere she absolutely does not want to go, What Feeds Below is worth adding to your reading list. Just don’t blame me if your imagination starts making the walls around you feel a little closer than they actually are.

What do you think? Would you be willing to descend into the Void with Petra and Jade, or would you stay safely on the surface? Let me know in the comments.

What Feeds Below by Tatiana Schlote-Bonne releases October 6, 2026. An advance reader copy of this book (ARC) was provided to me by the publisher via Netgalley in exchange for an honest review.

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