(By Justine Castellon and Olive Steven) There’s a special kind of thrill in getting an author to actually talk about their own book, not the back-cover blurb, not the marketing copy, but the why behind the choices. We read Itsy Bitsy Spyder: Evolution cover to cover before sitting down with J.R. Larriba, whose debut horror novel opens a planned trilogy, and asked him to walk us through the title, the cast, and what he was chasing tension-wise. Here’s what came out of it, alongside what we found on the page ourselves.
Why “Itsy Bitsy Spyder”?

We love it when a title turns out to be smarter than it first looks, and this one is. Larriba confirms the obvious part right away: yes, it’s a play on the classic nursery rhyme. But then he tells us the actual intent behind it, and this is where it gets good. Because this is a horror story, he wants to take the everyday, the mundane, the banal, and turn that into the horror. His example stuck with us: even cookies cooling on a rack become a symbol of something sinister underneath. As he puts it, “Nothing is safe. Everything bites.” That’s the kind of line that tells you exactly what kind of dread you’re signing up for, not jump scares, but the sense that comfort itself can’t be trusted. And once you’re actually reading, that promise holds. The book earns that line.
And here’s a fun tease: “Spyder” isn’t actually about spies at all. It’s an acronym. Larriba wouldn’t tell us what it stands for, joking that revealing it now would spill the beans. We won’t spill them either. Consider that a built-in reason to read the book yourself.

Meet the Cast
Ask any horror author what makes their book tick, and if they’re honest, it’s usually the people, not the monster. Larriba clearly agrees. He gave us a full rundown of who’s carrying this story, and every one of them is hiding something, which lines up with what we saw play out on the page.
Detective Thomas Krill anchors the book. Larriba describes him as an extremely talented homicide detective, the one who always gets handed the weird cases, weathered, jaded, and dedicated. Too dedicated. The line that got us was this one: Krill “prefers the dead over the living,” which means the job eats the parts of his life that should matter most: family, faith. And yet Larriba insists he’s built to be an “everyman,” someone easy to love and relate to, flaws and all. We found that true from the first chapters onward.
Detective Isabela Ortega is homicide’s junior detective, pragmatic, courageous, and hiding her own shame under a layer of steel. She tells herself she doesn’t need any man, but Larriba let slip that a crush on Krill is simmering under all that armor. We appreciate that he didn’t make her invulnerable; the contradiction is the point.
Dex is the lab geek hiding from his own past, and possibly, Larriba’s own word choice here, an “unsuspecting hero. Maybe.” That “maybe” is doing a lot of quiet work, and we’re not going to guess at it for you.
Ella Krill, Thomas’s ex-wife, might be the most emotionally loaded character in the bunch. Larriba is careful to note she’s “ex” out of necessity, not desire,” she still loves him, but the ghosts he chases have invaded their home, forcing her to choose between her marriage and her daughter’s safety, becoming both nurturer and protector. He didn’t clarify whether those “ghosts” are literal or just a way of describing how consuming Krill’s obsession has become, and having read the book, we think that ambiguity is intentional. Larriba warns this dynamic opens a door to “unspeakable retribution,” so keep an eye on Ella.
Abby, the Krills’ daughter, is sweet, innocent, and adores her daddy, “mostly.” We clocked that qualifier immediately. So did you, probably.
Sofia Messina starts the book as a murder victim’s wife, but Larriba was quick to add: “all is not what it seems at the Messina residence.” Her husband Brad kept a secret from her, one that costs them everything.

How He Builds (and Keeps) the Tension
We asked Larriba directly how he keeps readers hooked through a story this layered, and his answer was refreshingly craft-focused. He leans on world-building and characters with real emotional baggage, the goal being that you fall for these characters from page one, so that when the stakes climb, you’re climbing right alongside them. In his words: “The characters and their entanglements are as much a part of this story as the mystery behind the murders. More so perhaps.” We can vouch for this firsthand. The opening chapter alone does the work of settling you into the story rather than rushing you through it, and that patience pays off. It’s the kind of start that makes you put the book down for the night still thinking about what you just read, and pick it back up the next chance you get, needing to know exactly what happened at that murder scene.
He also named the emotional heartbeat of the whole novel without us having to dig for it: neglect. Specifically, what happens when a good man trades his family for the job. His exact words hit harder than anything in the marketing copy: “There’s nothing worse than a father who is there, but isn’t.” That’s the real spine under the horror trappings, and it’s felt in nearly every scene between Krill and his family.
We have to give him credit for the honesty here. When we asked what was hardest to pull off, he told us straight: weaving in the time-travel elements without letting them tip into cartoonish or far-fetched territory, which risked undercutting the tension he’d worked so hard to build. His exact words: “I’m still not convinced I did.” That kind of self-aware admission from an author is rare, and honestly, it made us trust him more, not less. He is confident, though, that the ending pulls every moving piece, and there are a lot of them, into one cohesive message, which he summed up with a line neither of us has been able to shake since: “DO NOT BE LATE for the school play, or the cosmos will swallow you whole.”

Where It Sits on the Shelf
Genre labels can be tricky with a book like this, but if we had to shelve it, we’d land on upmarket horror. What we mean by that: Larriba writes with more care for language and character interiority than a lot of straight genre fiction bothers with, so readers who don’t normally pick up horror will still find plenty to hold onto here. At the same time, he doesn’t sacrifice any of the genre payoff to get there. The investigation keeps pulling you forward at a real clip, there are moments of visceral, ritualistic horror that will make squeamish readers wince, and the sense of something vast and wrong looming behind the case only grows heavier as the pages turn. If you’re someone who enjoys a police procedural that slowly stops making sense in normal, human terms and starts tipping into something cosmic, particularly one where the detectives are carrying as much personal wreckage as the case itself, this book hands you an easy way in.
Our Takeaway
Reading the book alongside talking to Larriba reframed it for us in the best way. What reads on the surface as fog, murder, and cosmic dread is actually, by the author’s own account and by our own experience of it, a story about a father losing his family in slow motion, dressed up in horror-thriller clothes. The domestic-horror instinct (killer cookies, anyone?) and the tangled relationships (Ella and Abby, Ortega’s buried feelings, Sofia’s marriage built on a lie) came through clearly on the page, and they’re what stayed with us after the last chapter.
Worth picking up? Absolutely, especially if you want horror that lingers in the heart as much as the spine. Just go in knowing this is character-first horror, not a clean, clockwork mystery. The opening chapter earns your patience, and by the time the ending pulls its many threads together, that line about the school play is going to stay with you long after you’ve closed the book.

COMING SOON
A washed-up Professor Whaler receives the invitation of a lifetime, the kind that rewrites history and sets a dying career ablaze. Cream-colored paper. Expensive font. Coordinates to a place that should not exist.
But beneath the elegant script lies a hunger steeped in blood and ritual. In the drowning cenotes of the Yucatán, an ancient titan screams for release, and a little girl’s innocent smile hides an appetite far older than gods. Whaler must decide: become the chronicler who resurrects forgotten power, or the next flayed page in Mommy’s reliquary of stillborn gods.

ITSY BITSY SPYDER
by J.R. Larriba
The haunting mist at Mill Valley cloaks more than killers. Below, an ancient hunger awakens, and Detective Thomas Krill, tormented by a shattered marriage and waning faith, dares to unmask it. Paired with sharp-edged Isabela Ortega—her steel resolve veiling private grief—and supported by lab tech Dex (fleeing his own shadows) and survivor Sofia Messina (deaf-blind yet gifted with unnatural vision), Krill hunts a sadistic murderer staging murders with ritualistic precision: bodies drained, necks snapped, heads swapped, posed for pleasure.
As clues accumulate—pulsing venomous relics, spider webs of fate, whispers in the mist—Krill uncovers links to an occult Order obsessed with immortality. But the true horror is personal: the killings trace to Krill’s lifelong neglect of the living for the dead. His estranged wife Ella, left to fiercely nurture and protect their daughter Abby, suppressed a bitterness that now erupts. Through the Order’s hubris and Krill’s meddling, Ella becomes vessel for a timeless cosmic force—a vengeful “mama bear” titan born from the void.
/HORROR
Available in Kindle and Paperback

Justine Castellon is a brand strategist with an innate ability to weave compelling narratives. She seamlessly blends her professional insight with her passion for literature. Her literary works include romantic drama novels—Four Seasons, The Last Snowfall, Gnight Sara / ‘Night Heck, and I Love You, Sunday Sunset. With her ability to tell stories that linger long after the last word, Justine leaves a mark not only in the world of branding but also in the hearts of her readers.
www.justcastellon.com

Olive Stevens is an agency copywriter and managing editor of Just Reading Nook. She also writes book features and news articles.
You can follow her at x /@olivesstevens




