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Avril Maria Serene
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Aunt Tiks: The Killer App (Debra Ann Wynn Mysteries) Hardcover – May 30, 2025

by Avril Maria Serene (Author)
4.8 out of 5 stars 63 ratings
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A new app. A deadly secret. A killer who’s always one step ahead.

When Tik launches the hottest new social app of the decade, everyone wants in. But what starts as a revolution in connection quickly turns into a nightmare—because someone is using it to hunt.

Debra Ann Wynn, a tenacious investigator with a knack for spotting lies, is called in after a string of unexplained deaths. The trail points back to Aunt Tik’s app—and to a conspiracy darker than anything she’s faced before.

If Debra can’t crack the code, the next victim could be her, her friends, or her loved ones.

A gripping thriller that blends cutting-edge technology with old-fashioned suspense.

Scroll up and grab your copy today.
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Product details

  • ASIN ‏ : ‎ B0FBK8QX83
  • Publisher ‏ : ‎ Independently published
  • Publication date ‏ : ‎ May 30, 2025
  • Language ‏ : ‎ English
  • Print length ‏ : ‎ 435 pages
  • ISBN-13 ‏ : ‎ 979-8285896159
  • Item Weight ‏ : ‎ 1.62 pounds
  • Dimensions ‏ : ‎ 6.24 x 1.17 x 9.24 inches
  • Part of series ‏ : ‎ Debra Ann Wynn Mysteries
  • Best Sellers Rank: #3,245,609 in Books (See Top 100 in Books)
  • Customer Reviews:
    4.8 out of 5 stars 63 ratings

About the author

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Avril Maria Serene
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Avril Maria Serene

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7/23/2025: As some of you have noticed and commented, I've recently become a victim of the politics of the times.

Thanks entirely to a literate and appreciative audience, my books tend to draw 4.8 to 5 stars in reviews from those wonderful readers on Amazon who've spent hard-earned money to buy and then read them. They've given me my first real success as a writer, and I am beyond grateful.

Unfortunately, the same books have suddenly come under vicious attack en masse on Goodreads. In the space of a few hours, members of an alt-right echo chamber have dumped hundreds of anonymous one-star "reviews" attacking my work on that website, which has no guardrails for such bullying behaviors.

Still, the quality of my writing speaks for itself (as does theirs).

It's truly a shame we've come to this point as a society. Vbi crvdvs et stvltvs imperat, malvm regit, indeed. Regardless, Debra Ann wouldn't be happy with me if I let it affect how I write or what I have to say, so I won't (those who've suffered similar assaults are going to love "Nero's Fiddle" when it comes out!)

I wanted those who have supported me and my work to know what was going on, and I won't address it any further, other than in my novels

But a little about me - a San Diego native, I graduated UCSD with a major in Business Accounting, minoring in Creative Writing. After several years as an accountant at a large firm, life took me in a different direction, and I worked as a stringer for several local newspapers.

In the meantime, I kept to my habit of writing short stories in my free hours for family and friends. Over time, Debra Ann Wynn, SDPD Sergeant Marci Robbins, private detective Harry Sanderson, Paul Castro, and other characters sprang to life, based on people I know and love. I began writing my first novel, "The Mourning Mail," in 2022, finishing a year later. Encouraged by their reception, I wrote two more books for the series, "The Hodin Cabal: Choices" and "Aunt Tik's: The Killer App."

Debra Ann Wynn's world had expanded; I had to incorporate those changes into the first book, changing the title to "Six Degrees from Killing Brian."

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Customer reviews

4.8 out of 5 stars
63 global ratings

Customers say

Customers praise the book's pacing, particularly how it weaves together social media elements, and appreciate its sophisticated, psychological suspense plot. The writing style is compelling, and customers find the book intelligent, with one review highlighting its tech-driven crime thriller elements. They enjoy the character development and dark humor throughout the story, and one customer notes how it combines crime drama elements.

Select to learn more

PacingSuspenseful storySuspense levelIntelligenceWriting styleCharacter developmentHumorCrime content
23 customers mention "Pacing"21 positive2 negative

Customers appreciate the pacing of the book, noting that the story moves at a great pace while thoughtfully weaving together social media elements.

"...Wynn, our investigative journalist heroine, isn’t just smart — she’s relatable in that “she could be my neighbor” kind of way...." Read more

"...The novel grips you from the first page without ever revealing its secrets—or spoiling the ride. What Makes It Stand Out: -..." Read more

"...The pacing is fast the writing pulls you in and its just one of those books you dont want to put down...." Read more

"...Their relationship is warm and believable, and I liked how grounded they were while everything else around them got so chaotic...." Read more

23 customers mention "Suspenseful story"22 positive1 negative

Customers find the book's premise super intriguing and strongly crafted, with one customer noting how intuition drives the narrative forward.

"Aunt Tiks: The Killer App is an engaging mystery that blends modern technology with real-world crime in a gripping way...." Read more

"...Innovative Premise with High Stakes: The escalation from a harmless "prank" to lethal consequences is handled with precision that ratchets up..." Read more

"This thriller hooked me right from the start. The premise was super intriguing and the story totally delivered...." Read more

"...smile, and her friendship with Detective Marci Robbins gave the story a solid anchor. What hooked me most was the eerie “Aunt Tiks” game...." Read more

22 customers mention "Suspense level"21 positive1 negative

Customers enjoy the suspenseful elements of the book, describing it as a psychological thriller with crime elements that keeps them engaged throughout.

"...of Matthew Quirk or Karin Slaughter — it has that same mix of smarts, suspense, and heart." Read more

"...The plot is modern and engaging, blending a high-tech app with a classic murder mystery...." Read more

"...Very well done. Highly recommend this read. Very exciting and entertaining." Read more

"Different but interesting......" Read more

12 customers mention "Intelligence"11 positive1 negative

Customers appreciate the book's intelligence, describing it as smart and clever, with one customer noting it's a tech-driven crime thriller.

"...Creepy, smart, and surprisingly heartfelt in places." Read more

"...Perfect if youre into technothrillers or curious (and a little freaked out) about where tech might be taking us." Read more

"...this book to fans of Matthew Quirk or Karin Slaughter — it has that same mix of smarts, suspense, and heart." Read more

"...Debra Ann Wynn is a clever and resourceful investigator you'll love rooting for. The story is a quick, exciting read with plenty of twists and turns...." Read more

11 customers mention "Writing style"11 positive0 negative

Customers appreciate the writing style of the book, finding it compelling, with one customer describing it as a sharply written tech-mystery.

"...This is an inventive, sharply written tech-mystery that balances suspense and emotional stakes with style." Read more

"...The pacing is fast the writing pulls you in and its just one of those books you dont want to put down...." Read more

"...The writing is sharp and often funny, but it also takes some deep dives into how social media, pranks, and “games” can turn toxic...." Read more

"...It’s a timely and well-written read for anyone who enjoys crime thrillers with a tech twist." Read more

7 customers mention "Character development"7 positive0 negative

Customers appreciate the character development in the book.

"...The characters are smart and brave, and the story makes you think. It’s fast, fun, and full of suspense from start to finish." Read more

"...I really enjoyed the mix of suspense, intrigue, and character depth—it felt fresh and modern while still capturing that classic mystery vibe...." Read more

"...The characters felt deep, the atmosphere was fantastic, and the pacing was great. Well done!" Read more

"...thriller pulled me in with its unsettling realism and multidimensional characters...." Read more

7 customers mention "Humor"7 positive0 negative

Customers enjoy the book's dark humor and quirky pranks.

"...What hooked me most was the eerie “Aunt Tiks” game. It starts off with quirky pranks and odd little missions, but it quickly slides into dangerous..." Read more

"...Their friend Marci, a homicide detective, is also great—tough but funny, and she keeps things moving...." Read more

"...It’s fast, fun, and full of suspense from start to finish." Read more

"...seem harmless, then flips into a high-stakes chase full of danger, dark humor, and “wait… could this really happen?” moments...." Read more

6 customers mention "Crime content"6 positive0 negative

Customers enjoy the crime content in the book, with one review describing it as a classic murder mystery mixed with drama.

"...An electrifying blend of investigative drama and digital suspense—with a premise that twists modern anxieties into something unpredictable and..." Read more

"...It reminded me a little of Black Mirror, mixed with a crime drama. Creepy, smart, and surprisingly heartfelt in places." Read more

"...plot is modern and engaging, blending a high-tech app with a classic murder mystery...." Read more

"...I’d absolutely recommend this if you like mysteries that blend tech, crime, and a touch of dark humor." Read more

Top reviews from the United States

  • Rebecca
    5.0 out of 5 stars A Tech-Savvy Mystery That Slips the Mundane and Dials Up the Digital Dread
    Reviewed in the United States on August 13, 2025
    Verified Purchase
    In Aunt Tik’s: The Killer App, investigative journalist Debra Ann Wynn is thrust into a twisted digital nightmare when what begins as a flippant online prank turns into something far more sinister. What feels like a joke becomes the spark for a deadly web of orchestrated crimes, blurring lines between virtual mischief and real-world horrors. The novel grips you from the first page without ever revealing its secrets—or spoiling the ride.

    What Makes It Stand Out:

    - Digital Age Relevance: The story explores how online platforms and anonymous challenges can spiral out of control, capturing today’s anxieties about how technology can be weaponized.

    - Ensemble with Purpose: Debra Ann, her forensic-scientist husband Paul, and Detective Sgt. Marci Robbins form a grounded yet dynamic investigative core. Their blend of investigative skill and personal stakes gives the story emotional weight beyond the tech-thriller trappings.

    - Innovative Premise with High Stakes: The escalation from a harmless "prank" to lethal consequences is handled with precision that ratchets up tension relentlessly, making the stakes feel both urgent and emotionally resonant.

    Good to Know:

    - This thriller feels contemporary—perfect for readers who enjoy mysteries rooted in social media, psychological tension, and cutting-edge tech twists.

    - The pacing is brisk but thoughtful—there’s time to connect with characters while mystery and dread keep building in the background.

    An electrifying blend of investigative drama and digital suspense—with a premise that twists modern anxieties into something unpredictable and thrilling.

    This is an inventive, sharply written tech-mystery that balances suspense and emotional stakes with style.
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  • Book Bard 88
    5.0 out of 5 stars Twisted, Timely, and Totally Addictive
    Reviewed in the United States on June 30, 2025
    Verified Purchase
    I was hooked from the first chapter and stayed up way too late trying to unravel the mystery. The plot moves fast and dives deep into a disturbingly realistic scenario where online games and viral challenges blur into deadly real-life consequences. What I appreciated most was how smart and sharp the story felt—balancing suspense, clever investigative work, and a chilling look at how easily the internet can be manipulated for harm.

    The characters felt grounded and relatable, especially Debra Ann, whose mix of determination and intuition really drives the story forward. The stakes kept rising in all the right ways, and I genuinely didn’t see the twists coming. I’d absolutely recommend this if you like mysteries that blend tech, crime, and a touch of dark humor.
    Helpful
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  • Elizabeth B
    4.0 out of 5 stars Smarts, suspense, and heart
    Reviewed in the United States on August 6, 2025
    Verified Purchase
    From the first chapter, I felt like I’d stumbled into a mystery that could easily be happening right now in my own city. Debra Ann Wynn, our investigative journalist heroine, isn’t just smart — she’s relatable in that “she could be my neighbor” kind of way. Her banter with Paul made me smile, and her friendship with Detective Marci Robbins gave the story a solid anchor.

    What hooked me most was the eerie “Aunt Tiks” game. It starts off with quirky pranks and odd little missions, but it quickly slides into dangerous territory — we’re talking a teenager caught with a remote-controlled assault rifle pointed at a judge’s home. The mix of everyday family moments with high-stakes investigation kept me flipping pages long past bedtime. I really liked how the story wove in different threads: strange public stunts, an unsettling murder disguised as a traffic stop, and the creeping sense that all of it is connected.

    The pacing worked for me — tense, but not so fast that I couldn’t savor the details. I also appreciated that the tech-heavy parts were explained clearly without feeling like a lecture. It’s a timely warning about how easily young people can get pulled into dangerous online worlds, and how those “games” can have very real consequences.

    If I had to nitpick, there were a few places where the procedural details slowed things down a touch, but it didn’t take away from my enjoyment. I’d happily hand this book to fans of Matthew Quirk or Karin Slaughter — it has that same mix of smarts, suspense, and heart.
    One person found this helpful
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  • Cravings1954
    5.0 out of 5 stars This is why you should be wary of the internet!
    Reviewed in the United States on July 29, 2025
    Verified Purchase
    This thriller hooked me right from the start. The premise was super intriguing and the story totally delivered. It dives into the creepy dangerous side of the internet in a way that feels scarily real. The tech stuff is spot on and the twists kept me guessing the whole way through. The pacing is fast the writing pulls you in and its just one of those books you dont want to put down. Perfect if youre into technothrillers or curious (and a little freaked out) about where tech might be taking us.
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Top reviews from other countries

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  • safwan
    5.0 out of 5 stars Social Media Gone Psycho—Couldn’t Put It Down
    Reviewed in Canada on July 29, 2025
    Verified Purchase
    Honestly, I thought this would just be a quirky detective story, but things get dark fast. Debra Ann is a total badass—smart, stubborn, and not afraid to get her hands dirty. The whole killer app idea had me glued to my Kindle (and side-eyeing my own phone), and the way everything unravels online and in real life is wild. There’s some dark humor mixed in, and every time I thought I figured out the villain, nope, I was wrong again. If you like your mysteries with a techy twist and a little bit of paranoia, this one’s a blast.
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  • Víctor
    5.0 out of 5 stars muy original
    Reviewed in Spain on August 2, 2025
    Verified Purchase
    este libro me engancho desde el principio la mezcla de crimen tecnologia y redes sociales esta muy bien lograda y te hace pensar en lo cerca que estamos de que algo asi pase de verdad los personajes son solidos y la historia va subiendo de intensidad hasta el final
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  • Worthing Reader
    5.0 out of 5 stars A Razor-Sharp Tech Thriller for the Social Media Age
    Reviewed in the United Kingdom on July 7, 2025
    Verified Purchase
    This is a sharp, disturbingly timely thriller that combines crime, tech paranoia, and psychological suspense in a way that feels imaginative and very plausible. I liked the take on prank culture and how the viral antics spiralled into a much darker narrative.

    The story follows investigative journalist Debra Ann Wynn and her husband, forensic tech expert Paul, as they team up with their friend Marci, a homicide detective, to unravel the web behind "Aunt Tik’s" challenges. I really enjoyed the dynamic between the three characters.

    Overall, this is an inventive and thought-provoking thriller that blends suspense, satire, and social commentary into a compulsive read.
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  • Tony Walker
    5.0 out of 5 stars Dark Web, Real Stakes
    Reviewed in Italy on July 18, 2025
    Verified Purchase
    I picked this up on a whim and ended up glued to the story. Aunt Tiks blends digital chaos and real-world crime in a way that feels uncomfortably possible. The mystery kept building, the characters felt real, and the twists genuinely surprised me. Creepy, clever, and completely binge-worthy.
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  • Olanrewaju Jimoh
    5.0 out of 5 stars For mystery lovers
    Reviewed in the United Kingdom on July 7, 2025
    Verified Purchase
    The pacing deserves special praise—the narrative builds methodically while maintaining tension, with each revelation logically flowing from careful detective work rather than convenient coincidences. The author excels at showing how digital breadcrumbs can be followed across both virtual and physical landscapes, creating a puzzle that challenges both the characters and readers.
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