Virtual Book Tour: The Serpent's Order by SZ Estavillo #interview #giveaway #thriller #rabtbooktours @szestavillo @RABTBookTours - A Life Through Books

Thursday, February 19, 2026

Virtual Book Tour: The Serpent's Order by SZ Estavillo #interview #giveaway #thriller #rabtbooktours @szestavillo @RABTBookTours



The Serpent Series, Book 4


Thriller

Date Published: 02-10-2026

Publisher: Oliver-Heber




An assassin bound by obedience. A detective marked for death. A cartel war with no survivors.


Von Schlange thought she’d escaped her past. Now Black Nova owns her—an elite, off-the-books task force where obedience is survival and failure means death. As their newest assassin, she’s unleashed on targets tied to Jaxon Ryker, a drug lord buried deep in the Alaskan wilds.

Her partner, Xander Holt, a former Navy SEAL with ice in his veins, lives by the same brutal code: no attachments, no lines crossed. But as missions turn bloody, the fragile boundary between partner and lover begins to blur—and desire becomes its own kind of danger.

Across the country, Detective Anaya Nazario faces a nightmare of her own. A synthetic “zombie drug,” deadlier than fentanyl and immune to Narcan, is ripping through Los Angeles. Her investigation exposes a network of dirty cops shielding Ryker’s empire—and puts a target squarely on her back.

Two women on opposite fronts. One war against corruption and cartel power. And a single truth—every betrayal leaves a body behind.


Explosive, unrelenting, and razor-sharp, The Serpent’s Order propels the Serpent Series into its most dangerous chapter yet—where justice is a myth, and survival comes at a price paid in blood.

 



What is the hardest part of writing your books?

 

People always ask what the hardest part of writing a book is. For me, it’s not the writing—it’s the research and everything that comes after.

 

I write crime thrillers, so the research can be slow and technical, especially compared to genres that follow a more familiar template. But even that isn’t the hardest part.

 

The hardest part is the marketing. Getting reviews. Finding ARC readers. Promoting the book after you’ve already poured everything into writing it. That part takes more time, more effort, and more emotional energy than people realize.

 

Writing the book feels like the beginning. The real work starts after.

What are your most played songs?

 

My most-played songs are all over the place. I have an Amazon playlist full of indie artists—melodic, emo style, emotional, a little moody. Very “write the feelings out” energy.

 

But when I’m deep in action scenes, I swing hard in the other direction. Louder. Faster. Heavier.

 

Metallica is forever in my rotation.

 

Music sets the tone for everything I write.

 

Music sets the tone for everything I write. I gravitate toward melodic indie and emo for emotional scenes, and heavier rock when I’m writing action. Metallica is always in the mix.

 

Do you have critique partners or beta readers?

 

I don’t really have a traditional critique partner or beta reader anymore. When I was writing standalone novels, I relied on them more. With a series, I know these characters so well now that I’ve grown out of needing that kind of outside input at the early stages.

 

That said, I do have a fellow author and editor I trust who has edited my books before. We do author swaps—he reads my work, and I read his—and that’s always incredibly helpful. Having someone who understands both craft and the reality of publishing makes a big difference.

 

What book are you reading now?

 

Lately, I’ve been reading outside my usual comfort zone. I used to read almost exclusively thrillers—probably because I write crime thrillers—but recently I’ve been branching out. I just finished a sci-fi novel, then a fantasy book, and now I’m reading a romance.

 

I’m a big believer in reading widely. Exploring other genres helps me understand pacing, structure, and character development in different ways, and it makes me a better writer overall. As a reader, it also reminds me why I love storytelling in all its forms.

 

How did you start your writing career?

 

I’ve been writing for as long as I can remember. As a kid, I carried a pen and paper everywhere. In second or third grade, I had a writing teacher who helped me strengthen my reading skills and regularly assigned us stories. After one exercise, she read my short story aloud and told me, “You’re going to be a writer someday.”

 

At the time, I didn’t believe her—I actually thought it was an insult. When you’re that young, you imagine becoming a doctor or a lawyer, not a writer. But she saw something in me before I could see it myself, and she was right. I never stopped writing.

 

As I got older, I focused on developing my craft. I worked with literary agents, attended writing workshops, volunteered as an editor, and eventually signed with an agent. I was represented for five years and went on submission with four manuscripts. Two of those books were considered “dead on submission.”

 

After parting ways with my agent, those same manuscripts were picked up by a small press—because an editor believed in the stories. One of those books went on to hit #1 on Amazon in three categories. That experience taught me something important: publishing is subjective, and even when you do everything “right,” rejection doesn’t mean you were wrong.

 

I’m published with a small press, and I’m proud of that. One of my books reached over 24,000 downloads, and my first year sales have been solid. The journey hasn’t been easy, but it’s been honest. I’ve learned that having an agent doesn’t guarantee a deal, that submission can take years, and that belief—in yourself and from the right publisher—matters more than prestige.

 

Traditional publishing is often treated as the gold standard, but the reality is that most books—even traditionally published ones—sell modestly. What keeps me grounded is focusing on the craft, not the numbers, and remembering why I started writing in the first place: to tell stories and share them with other people.

 

Tell us about your next release.

 

The Serpent’s Order is Book Four in the Serpent series, and it’s the most ambitious novel I’ve written so far. The story centers on a deadly synthetic drug—tranq dope, often referred to as a “zombie drug.” While inspired by a real substance on the streets, this version is far deadlier, engineered by trained chemists working for a criminal operation. The result is a wave of fatal overdoses across Los Angeles.

 

Detective Anaya Nazario, now working homicide, is pulled into the case as California laws classify certain overdose deaths as homicides. Running parallel to her investigation is Von Schlange’s story. Once a vigilante serial killer, Von has been forcibly recruited by Black Nova, a covert black-ops task force operating beyond traditional agencies. Instead of prison, she’s trapped in another kind of confinement—serving as an assassin for the state.

 

Set between Los Angeles and Alaska, the novel blends crime, espionage, and moral ambiguity. It’s fast-paced, high-concept, and layered, with a romance B-story beneath the action. I believe it’s one of my strongest books to date—and my editor agrees.


About the Author


As a BIPOC thriller author, she previously parted amicably with her agent and, three months later, secured an eight-book deal with Oliver-Heber Books—now boasting 24,000 downloads in its first year and a BookRaid bestseller ranking in the thriller category. The Serpent Woman (Book 2) reached #1 on Amazon and topped all three of its categories. Her background spans literary agencies and TV studios, where she contributed to greenlit screenplays that became Lifetime movies. She holds a Master’s in Television, Radio, and Film, has taught author branding workshops (L.A. Writer’s Conference, North Texas RWA), and maintains a 100K+ social media following.


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