The Inevitable Undoing of Zahara Douglass

by Leslye Penelope

For five years, Zahara Douglass has been haunted by her sister’s impossible disappearance. Now, in December 1999, with the world on the brink of chaos, Zahara sets out to find her sister no matter the cost in this twisty and compelling modern fantasy from Leslye Penelope.

In April 1994, Zahara watched her twin sister, Annica, get hustled into a stranger’s car and disappear—only to return to a world where no one remembers Annica ever existed. Not her mother. Not the police. No one.

Now, as the world braces for the looming Y2K crisis, Zahara finds evidence that proves her sister was real. Determined to uncover the truth, she hires a private investigator and begins digging into her family’s shadowed past. When the investigation leads to two charismatic men who once served with her father in Vietnam, Zahara realizes she and her sister may be pawns in a dangerous power struggle with unthinkable consequences.

​To find her sister, Zahara must face the truth about her family, her memories, and the power lurking within her. But the sisters’ reunion comes at a price—one that could unravel reality and bring about the end of the world.

Genres: Fantasy, Science Fiction, Mystery, Fiction, Historical Fiction, Mystery Thriller, Adult

489 pages, Kindle Edition

First published August 11, 2026

About the author

Leslye Penelope also writes as L. Penelope. She is an award-winning author of fantasy and paranormal romance.

Reviews

[suspenseisthrillingme · Rating 4.5 out of 5]

Hot damn! A mind-bending tale of thought-provoking themes, supernatural mysteries, and emotional depth, The Inevitable Undoing of Zahara Douglass hit all the right chords with the plot, characters, and setting. You see, from the edge-of-your-seat rush of this onion-like plot once the story got going to the compelling morally gray heroes and villains that avoided a black-or-white Marvel-type flavor, it was an immersive epic that I couldn’t put down. Combining a War Games-like story with a 90s computer game feel and a very technothriller-meets-speculative fiction vibe, this book was a hard-to-describe combo of cinematic scenes, nostalgic touches, and out-of-the-box, wholly original plotting. But it was the underlying message that really got my literary brain revving. Well, and that fast-paced action-movie-esque second half of über-high stakes that paired perfectly with the emotion running underneath it all.

So what exactly were the themes I so adored? Taking a hard look at technology, power, sacrifice, and family, the story veered away from just a simple mystery into something far bigger. Utilizing quite the original premise of a missing twin who no one remembers, I was absolutely floored as the shocking family secrets, eerie mythological vodou elements, and evocative Y2K setting came together into one unified and cohesive plot by the end. Don’t get me wrong, there was definitely a slow start to this character-driven novel as the colorful personas wormed their way into my heart. In spite of that, though, I found myself gobbling up this almost-five-hundred-page read in under twenty-four hours. Unguessable and twisty from beginning to end, this wild and crazy thrill ride added emotion and depth to an ambitious story of atmospheric magic, sisterly love, and world-saving desires. Bravo, Ms. Penelope, it was fantastic! Rating is 4.5 stars.

Read this if you’re a fan of:
- Genre-bending storylines
- A race against time
- Masterful world-building
- Emotional depth
- A slow-burning start
- Diverse casts
- A dash of romance
- 1990s nostalgia
- World-ending situations
- Action-movie vibes
- Supernatural mysteries
- Family secrets
- Thought-provoking themes

SYNOPSIS:

In April 1995, Zahara watched her twin sister, Annica, get hustled into a stranger’s car and disappear―only to return to a world where no one has heard of Annica. Not her mother. Not the police. No one.

Four years later, as the world braces for the looming Y2K crisis, Zahara finds evidence proving her sister was real and hires a private investigator to dig into her family’s shadowed past. When the investigation leads to two charismatic men who once served with her father in Vietnam, Zahara realizes she and her sister may be pawns in a dangerous power struggle with unthinkable consequences.

To find Annica, Zahara must face the truth about her family, her memories, and the power lurking within her. But the sisters’ reunion comes at a price―one that could bring about the end of the world.

Thank you Leslye Penelope and Redhook Books for my complimentary copy. All opinions are my own.

PUB DATE: August 11, 2026

Content warning: chronic illness, missing person, death of a parent, gun violence, forced confinement, violence, murder, mention of: suicide, death

[Iffy · Rating 4 out of 5]

4.5 stars! I had SO MUCH FUN with this book what a ride. This is a contemporary fantasy mystery where a teen, Annica, is kidnapped in 1995 and no one remembers she exists other than her twin sister, Zahara, who sets out on a journey 5 years later to prove she existed and find her.

At no point could I ever have guessed where this story was headed … there were so many twists and turns and unexpected elements. The mystery was so good I had a hard time putting it down. This is definitely a “just one more chapter” book.

We get a lot in this book - a mysterious kidnapping, snippets of Vietnam War, uncovering a network of humans with abilities, a Y2K tech war, and a supernatural entity? If you told me that all of these things somehow WORK together in a book I wouldn’t believe you but it DOES.

The main character, Zahara, is so endearing and I came to love so, so many of the side characters as well. Zahara’s relationship with all the characters, especially her sister, felt so real and raw.

The only reason this wasn’t a full five stars was because some moments in this book I found to drag a smidge and there are other moments that I felt I wanted to spend a longer time on, but that’s minor. Overall - such a propulsive, nostalgic, and refreshing read!

[Becky'sBookBlog · Rating 3 out of 5]

The Inevitable Undoing of Zahara Douglass is a novel with a lot of moving pieces; a generational gift/curse of magic, a missing sister and the Y2K crisis, as separate elements these all held a moment of interest, but put together? They just didn’t work for me.

While the main element of the story, focused on Zahara searching for her sister, the unravelling of the mystery of her disappearance and how it tied back to their father’s time in Vietnam was intriguing, once it veered into an attempt to bring the world back to the Middle Ages via the Y2K virus I found myself losing interest. Whether that’s because a lot of the tech elements and jargon went over my head, I’m not sure. But it seemed a bizarre choice to show the danger of their powers and almost became a bit gimmicky at times. I did however love the start. The gut punch of Zahara losing her sister and then being the only person that remembered her, and then the almost horror of her having to move on with her life, all the while feeling like there was a piece of her missing. I’ll admit that when I first started reading her dads chapters I did wonder what was going on, how this would fit into the story, but I really loved this element and how it explained, not only what happened to Annica, but how. And then we get Annica’s pov told through an online diary and hackers chatrooms which slowly help us to unravel the mystery of her disappearance.

Zahara was my favourite of the pov’s we get, even if she did carry some hefty contradictions. Not wanting to get close to people and then instantly lusting over the investigator who she hires to look into Annica’s disappearance. But at her heart she was simply a young women desperate to prove that she wasn’t crazy, that she had a sister only she remembers, and she wants her back. She adds an emotional element to the story that I felt was desperately needed, because for the most part I struggled to care. The battle between two bad men, one wanting to throw the world back into the Middle Ages and the other wanting to stop him. I think because these characters are kept on the outskirts of the story it was hard to really dig into them, and I do think Zahara’s father chapters could maybe have been used more to develop them.

The chapters from Zahara’s dad’s pov added a sinister nature to the story, explaining how they came to develop their powers, where they came from and the danger they bring. But as the story developed it seemed like the magic became a bit too convenient for what was needed at the time. Characters were able to do things they hadn’t been able too previously and it all just felt a bit easy, like the author needed a certain plot point to work so she just made it fit. The magic was ambiguous in a lot of ways, and I’ll admit to just rolling with it for the most part because I didn’t really understand the workings (which I didn’t mind at all) but towards the end, I found myself struggling to not notice how it seemed new powers and plot devices were thrown in, whether they made sense to the previous plot or not.

I think the first 50-60% of this story was outstanding. It really leans into the horror surrounding Annica’s disappearance and how that ties back to her dads time in Vietnam, brings plenty of emotion to Zahara’s story and her desperate need to prove that Annica existed, but once it started moving away from this and more towards the two ‘bad guys’ who were trying to use the sisters for their own gain, I found myself losing interest. It just seemed like there were too many threads, and I couldn’t find it in myself to get interested in the secondary plot lines.

[CynnieRose · Rating 5 out of 5]

This stunning cinematic book is my favorite that I've read this year.
I was in my early thirties during the Y2K hysteria.The author does a seamless job of weaving lived black experience and the uncertainty of the time.
Perfectly plotted and read this fabulous book.

[Witch of the Stacks · Rating 5 out of 5]

⭐️⭐️⭐️⭐️⭐️

Thank you to NetGalley and Orbit Books for providing me with an ARC of The Inevitable Undoing of Zahara Douglass in exchange for an honest review.

The Inevitable Undoing of Zahara Douglass is an incredibly confident, fast-paced novel that evolves from supernatural mystery into something much larger and more science-fiction driven.

The novel’s use of multiple narrative forms is particularly well executed. Zahara’s first-person narration anchors the emotional core of the story, while the recorded tapes from her father serve both as a voice from the past and as historical framing for the increasingly disturbing reality surrounding her. Alongside this, diary excerpts, code entries, and surveillance records slowly construct Annica’s presence long before she physically appears within the narrative itself.

What makes this structure so effective is how naturally these threads converge during the novel’s final act. Rather than feeling fragmented, the shifting perspectives continuously build tension, mythology, and emotional resonance simultaneously. Annica’s unfolding presence throughout the novel becomes one of its most compelling elements, transforming her from an abstract mystery into something far more tangible and intimate.

The characterization is equally strong. Even the minor characters are given enough depth and individuality to feel purposeful within the story rather than existing simply to move the plot forward. As the novel slowly reveals the interconnectedness between its characters, those revelations feel earned and natural instead of contrived. It is clear the author took great care in structuring these relationships and laying the groundwork for their eventual convergence, and the payoff is there for the reader.

One of the most compelling aspects of the novel is its use of the twins as symbolic mirrors for larger thematic ideas running throughout the story: good and evil, order and chaos, progress and regression, technological dependence and the slower, more grounded existence of previous generations. The novel repeatedly returns to the idea of balance, examining what happens when that balance is disrupted and what sacrifices may be necessary to restore it.

The turn-of-the-millennium setting strengthens these themes considerably. Having lived through the Y2K era, there was something especially engaging about seeing that cultural anxiety reimagined through an alternate lens where those fears resulted in genuine societal harm. The novel captures the uncertainty and technological paranoia surrounding that period remarkably well, while transforming a very real historical moment into something eerie, speculative, and emotionally resonant.

This is easily one of my favorite ARC reads of the year so far, and I would highly recommend it to readers who enjoy speculative fiction that balances atmosphere, mystery, emotional depth, and ambitious storytelling.

[Nik · Rating 4.25 out of 5]

4.25/5 ⭐️

[Diana · Rating 2 out of 5]

The book began very strong but for me it began going downhill as it went. I lost interest around the middle because the story lost its grip on me as the characters began losing their strenght IMO

[Amiee · Rating 2 out of 5]

I LOVED The Monsters We Defy and I was so excited for this one....but the pacing is just too slow and about 50% I really didn't care if she found Annica.

This is just too long. I also thought the powers were somewhat silly and it just wasn't engaging.

[Shannon Miz · Rating 4 out of 5]

After a bit of a slow start, Zahara Douglass really found its groove. It started off a little iffy for me, I wasn’t quite sure what it was trying to do. But as the story progressed, and I understood what kind of story was being told, I really got into it. I will say, one of the things I loved from the start was the Y2K influence! It just worked so well for the story, and I must admit, I’ve never read a book involving it before!

I enjoyed Zahara as a character, and I certainly felt for her- having a twin that only you remember!? How could you not feel some kind of way? I also really enjoyed the mysteries that unfolded throughout the story, and it constantly kept me guessing. I also loved getting glimpses into the past via Zahara’s dad’s tapes that he made recounting his time in Vietnam. Unexpected, but I was certainly intrigued. There were some other bits of mixed media that were interspersed to break up the reading too, which I am always fond of. Overall, a definite win, and worth the somewhat slower pacing at times.

[Jay Brantner · Rating 4 out of 5]

The “sister disappeared, only I remember her” hook is a nice one, but I had a couple of worries going into this book, both of which were quickly alleviated.

First, the “look how worried we were about y2k when it was a big nothing” take is a pet peeve. It was nothing because people took enormous steps to recognize and mitigate the problems! Here, there are fictionalized twists to the crisis that depart from the real world, but it’s quite clear about the level of effort that went into mitigation.

Second, big mysterious hooks often turn into thrillers, which I don’t tend to like. And that happens here! But this book stands out from the typical thriller with an extended period getting to know the lead before things start coming unglued, allowing the reader to invest in the character rather than requiring a conspiracy to do all the emotional heavy-lifting. That helps a lot upfront, and the subsequent pacing keeps things smooth and entertaining from there.

Overall, this is an entertaining read, with the lead’s story punctuated by snippets of text from her sister’s computer or video recorded by her father to give the reader a more rounded picture of what’s going on. There’s some interesting musings on the role of tech in our lives, and the author’s background in romance writing clearly comes out in one subplot, but this generally doesn’t reinvent the wheel. It’s a solid, entertaining story, with good characterization and plenty of action.

First impression: 15/20

[Karen Barber · Rating 4 out of 5]

Supernatural sci-fi that is so hard to put down. The book opens with Zahara watching her sister get into a car before being driven away. Unfortunately, when she returns home nobody remembers her sister and Zahara’s world is very different to the one she recalls.
Years later she has earned her spot on the stage. She has survived being institutionalised by family members convinced she’s undergone some kind of breakdown. She still remembers her sister and is determined to take whatever steps she can to find her.
What follows is a story that defies convention. It starts years earlier with her father out in Vietnam. He and his colleagues experience an event that cannot be rationalised. It results in strange powers and years of trying to hide what they can do.
The book follows Zahara on her hunt for her sister and her discovery of what she has inherited from her father. Not at all what I expected, but a captivating read. Thanks to NetGalley for giving me access to read and review this before publication.

[Uyen · Rating 2 out of 5]

thank you Orbit for the free book.

dnf 30%

I liked the general premise of the story. I also forgot about the Y2K movement with all the fear about the Internet and how it was taking over. 😂

But this was just a bit too slow for me. The story meandered and didn't reach a good point by 30% in.

[Crystal · Rating 5 out of 5]

Fans of Legendborn need to read this asap. Thank me later.

[Nìk · Rating 5 out of 5]

Zahara has spent nearly five years convinced she had a twin sister, Annica, despite the entire world insisting Annica never existed. Then, on the eve of Y2K, Zahara finally finds proof that her sister was real and hires a PI to help uncover what happened to her.

And I could not have predicted where this story was going next (complimentary)

This book literally combined ALL my favorite things: magical elements, mystery, action, historical elements, a sprinkle of romance, and just enough quirkness to keep me locked in. And yes, I’m counting 1999 as a historical setting because IDC. 😂

The mixed media was one of my favorite parts. Chat rooms, surveillance logs, recordings, different documents!! it ELEVATED the story and made it feel incredibly immersive.

**I HIGHLY recommend reading the physical or immersive reading.**
There were moments where I was like, Wait…lemme run that back especially in the 2nd half. That’s a small complaint for how creative this book was but i’ll have to reread bc of that.

One of my favorite scenes involved Annica recounting what happened at a school dance through a “choose your own destiny” format, and the nostalgia HIT. I was half expecting Zahara to pull up Mavis Beacon next LOL

I also loved how whimsical and carefree Annica felt as a FMC. With all the strange and serious things happening around her, that personality brought such a refreshing energy to the story.

And the Y2K anxiety was CHEF’S KISS. I was too young to really understand the fear surrounding Y2K at the time, so I loved seeing that anxiety woven into the story. Instead of simply telling us people were terrified, the book SHOWED us that fear through the mystery and the world-building.

Overall, this was such a fun, imaginative read. Nostalgic. Unpredictable. Immersive.

4.5 ⭐️ → rounded up to 5 because the creativity deserved it.

[JaVone · Rating 3 out of 5]

Not usually a Sci Fi reader so I'm not sure of my rating is fair. The beginning and middle were so strong and intriguing. However, the ending had me so confused.

[emma · Rating 4 out of 5]

4.25⭐️

Thank you so much to Orbit for the physical ARC of this book!

What a wild ride it was. One of my favorite elements of this book was the different perspectives and writing styles. We get the story told through first, second, and third points of views in such creative ways! I feel like this writing style could have been clunky, but it flowed so well together as things unraveled.

I loved the inclusion of ballet as a part of the story because I feel like I don’t get to read much of that. The chronic illness representation was also incredible! I don’t struggle with the same things as one of our main characters, but as a chronically ill girl, I could relate to some of this character’s thoughts.

This book is a great standalone that brings mystery, fantasy and romance all together in the most magical and intriguing way. I definitely recommend it!

[Daynica Harley · Rating 4 out of 5]

A fascinating read with a wildly inventive plot. While some elements of the plot got lost in the sauce, I still enjoyed the experience.

[D Dyer · Rating 5 out of 5]

This was fabulous. The writing balanced a complex and twisting plot, multiple morally grey villains, multiple timelines and fantastical plot points slightly influenced by Caribbean folklore with building, vivid complex characters, both major and minor. We do get a full narrative arc in that the central questions asked in this volume are mostly answered, but there’s a lot of space left for a sequel in this universe. And the opening scene is particularly thoughtful in that it both clearly sets up the overarching plot, Zahara’s memory of her sister who has been erased from everywhere else and highlights the tension between Zahara and her mother, a less focused on conflict, but one that cshapes Zahara‘s approach to relationships throughout the novel.
The writing here is incredibly layered, but with enough quick twists in plot that it never feels over burdened.

[Abigail Pankau · Rating 4 out of 5]

Zahara doesn’t always understand her twin sister Annica, but she still loves her. Then one day, Zahara watches Annica disappear in a strange car, and she feels the world shift around her. When she gets home, she finds everything has changed; her mother has a stable job, they are not struggling with medical bills, and Zahara didn’t have to quit her dream of dancing ballet. But no one else can remember Annica, like she’s been completely erased from the world. So Zahara pretends that she doesn’t remember Annica. But four years later, at the end of 1999, Zahara finds evidence that her sister was taken, so she hires a private investigator to follow the clues. The investigation leads them to some people that served with Zahara's father in Vietnam, and they have an odd story of something that happened to them in the jungle. Those soldiers came back changed, and now there is something nefarious going on connected with the looming Y2K crisis. How far is Zahara willing to go to get her sister back?

An excellent speculative fiction novel with magical realism exploring sisters, family, and sacrifices for those we love. The world-building is great, and the characters are quite relatable in their drives but also their faults. The mystery is intriguing, and it’s a page-turning read as pieces are revealed. I did like the inserts of the father’s story and Annica’s online typings woven into the main narrative. The ending was a little weird and felt a little too brief, with some things unresolved. But overall, a really enjoyable read.

[Reactor Magazine]

"If you love an X-Men–style panoply of superheroic powers, The Inevitable Undoing of Zahara Douglass will scratch the itch and then some."

Leslye Penelope's The Inevitable Undoing of Zahara Douglass sticks science fiction, magic, and mystery into a blender. Read Jenny Hamilton's full review at Reactor!

[Ran · Rating 1 out of 5]

DNF at page 172

[Leanna Streeter · Rating 4 out of 5]

I had such a fun time with this one! Setting the story in the late ’90s added so much charm. The Y2K era, the technology, and all the little nostalgic details made it feel completely immersive.

What starts as a compelling mystery quickly grows into something much bigger. The blend of science fiction, mystery, and supernatural elements kept me guessing, and every new reveal pulled me deeper into the story. It moves at a great pace, so I was constantly telling myself “just one more chapter.”

More than anything, this book was just a blast to read. Whether it was the nostalgic setting, the twisty mystery, or the sci-fi elements, I found myself enjoying every minute of the ride. If you’re looking for a fast-paced speculative mystery that keeps surprising you, I’d definitely recommend picking this one up.

[Jill · Rating 4 out of 5]

3.5⭐️

[Courtney|the.bookcourt · Rating 3 out of 5]

Thank you to Orbit Books and Leslye Penelope for the e-arc in exchange for my review. All opinions that follow are honest and my own.

Zahara’s sister disappeared 4 years ago, but Zahara is the only one who remembers. Now new evidence has appeared and Zahara is once again determined to find out what happened to her sister. But there is more than meets the eye when it comes to her sister’s disappearance and finding her may just bring about the end of the world as they know it.

This book was wild from page one. I’d consider this a sci fi thriller which really isn’t something I’m normally drawn to but the premise definitely drew me in. A page turner for sure, but one that has me sitting wondering what I actually read.
I liked the flashbacks with Annica’s conversations online as well as their father’s tapes, felt like I was sleuthing out this mystery myself. And all the Y2K vibes especially with the whole bug situation was entertaining. I guess overall I just couldn’t wrap my head around the why? Like the motives of Quincy and Lording just didn’t make sense to me and made this whole story seem a bit drawn out. Maybe I just missed it or maybe it was something small that I just deemed insignificant.
Either way it kept me entertained and if you’re a fan of sci-fi, war on technology plus thriller vibes, this one’s for you.

[Fritzar Charles · Rating 4 out of 5]

I loved the idea of this book! I loved the storyline and the somewhat spooky aspect of the explanations! I didn’t love the y2k stuff and the events of the cyber war. Still a good story but I wish it took a different turn than it did.

[Marissa · Rating 4 out of 5]

3.5 ⭐️

I really enjoyed this! give me Black people doing cool paranormal shit without the entire narrative being about racial trauma™️ and I am SAT. It was a little too much book for the amount of story being told, but ultimately a good time.

[kris · Rating 4 out of 5]

Thank you to NetGalley and publisher for the opportunity to read an advanced copy. All opinions are my own.

Rating: 4/5

I put off writing this review for a really long time because I honestly just don’t have much to say. This is good. It’s entertaining, it’s creative, and in this era of copy-paste fantasy, it’s definitely unique. I don’t have anything negative to say really—everything about this book is well done and executed, it’s just not particularly memorable to me.

Setting this around Y2K was a really fun concept, and I think adapting the Y2K craze to a fantasy world was interesting and well done. It was a bit hard to take seriously at times—in retrospect it’s kinda a funny historical moment—but I give it lots of credit for uniqueness. The characters were interesting, even if I didn’t always buy their relationships with each other, but there were some cases where I did want a bit more. Zahara’s storyline, for example, touches on whether she can even trust her own memory—but only touches on it. A fuller exploration of this could’ve added a really rich layer to the story. My biggest complaints are things like that; the story was good as is, but could’ve been better.

[Shanquelle · Rating 3 out of 5]

This one really had me in the beginning! The premise immediately pulled me in, a woman searching for her missing twin sister when somehow no one else remembers that her sister ever existed? I was intrigued and wanted to know what happened to Annica and why Zahara seemed to be the only person who remembered her.

I also really enjoyed the late-‘90s/Y2K setting. There was such an interesting sense of uncertainty surrounding Zahara’s search, and the mystery at the beginning kept me turning the pages.

Unfortunately, somewhere along the way, the story went completely left for me. I knew going in that there were fantasy elements, but as the story became more heavily focused on the supernatural/sci-fi aspects, I started to lose interest. That’s admittedly not a genre I typically gravitate toward, so readers who enjoy speculative fiction and paranormal elements may have a very different experience.

My other issue was the length. The book felt much longer than it needed to be, especially once I was no longer as invested in the direction the story was taking. I think a tighter story and faster pacing would have helped keep some of the momentum created by the excellent opening.

[ReadnliftwithShar · Rating 4 out of 5]

😅

How far would you go to find your twin?The leaps and bounds Zahara went through to find her sister Annika was astounding. At one point I believed the reunion would never happen or that someone was playing a cruel joke on Zahara. But in the end, things came together. It took me longer to read this book because it was a lot of twists and many characters to keep up with. Around 55% things started to click for me and I was listening to the audiobook every chance I could. The ending was stressful, especially when the twins came to make a deal with Zahara. The narrator really outdid herself at that point because I was almost jumping out my skin - and the book isn’t even scary 🤣what a great twist to the Y2K madness.. and I loved the tapes from the dad. I wish we got to see the response from the mom, when Annika returned. 😭

[2TReads · Rating 3 out of 5]

I liked this read but felt as if it could have been shorter as there is a lot happening here.

I enjoyed the supernatural element blended with the technological, as I find that this theme is something that is resonant with the Black community.

I liked reading about Zahara's love and dedication to finding her sister even at the expense of her career.

I genuinely have enjoyed all that I have read from L. Penelope and I find that she is one of those writers who wants to bring her readers into the world and make them find parallels with her characters.