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A Lie for a Lie

A deadly game of cat and mouse unfolds when a housewife with a secret life takes on a tech billionaire with secrets darker than her own . . . from the author of How I'll Kill You.

Margaux leads a double life that would make most people dizzy. By day, she's a seemingly ordinary interior decorator with a picture-perfect marriage. By night, she works for a mysterious employer known only as Mr. X. Her infiltrating the lives of dangerous targets, gaining their trust, and ultimately exposing their crimes. 

Her latest unraveling the reclusive life of Bertram Casimir, a billionaire tech CEO whose career is as mysterious as his past. His sister claims he stole her app to build his fortune. Not only that, his girlfriend may or may not have recently gone missing.

Bertram sees through Margaux’s carefully constructed facade, matching her move for move. As the lines between hunter and prey blur, Margaux finds herself unexpectedly drawn to Bertram. They share more than she'd like to admit—a dangerous intelligence, a taste for high-stakes manipulation. When the evidence begins to shift, threatening to destroy everything she knows, Margaux realizes this is far more than just another job.

Her hidden past—and her life—are now on the line. One lie remains, and it might just save her.

Kindle Edition

First published March 10, 2026

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About the author

Ren DeStefano

2 books325 followers
Ren DeStefano lives in Connecticut, where she was born and raised. When she’s not writing thrillers, she’s listening to true crime podcasts and crocheting way too many blankets.

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5 stars
55 (13%)
4 stars
154 (37%)
3 stars
148 (36%)
2 stars
43 (10%)
1 star
10 (2%)
Displaying 1 - 30 of 106 reviews
Profile Image for Dee (on hiatus).
812 reviews243 followers
March 15, 2026
3.5 stars, rounded up for the second half. Overall, I liked "A Lie for a Lie", and although the beginning kinda failed to engage me initially, I'm glad I stuck it out. The start was sort of similar to many other thrillers & I thought I had it all figured out, but then it went off in a totally different direction than I expected for a satisfying conclusion. I will continue to follow the author.
Profile Image for Kelly (and the Book Boar).
2,915 reviews9,661 followers
December 10, 2025
I’ve lost my zest for reviewing, but somehow I’m still lucky enough to receive some reader copies, this one had a house on the cover and my belly is all full of gyro meat and hummus, so let’s give her a rip!

I snagged a copy of this upcoming release because I REALLY dug How I’ll Kill You. Unfortunately, I thought this one was just okay. The story here is about Margeaux who works as an interior decorator by day, but a sleuth on the side. Her latest job quickly morphs from a pretty meh case of a stolen app and the money that came from it to a potential murder mystery. I knew right away what was going on with the girlfriend and “Mr. X” was no big shocker either, but my biggest problems were (1) I HAAAAAAAAAAAAAAAAAAAAAAAAATE the hinting of “some super bad thing happened in the past, but I’m going to never talk about it for eternity while constantly reminding you readers it still exists” (and said reveal being so lackluster) and also this one sets itself up as maybe becoming a series and your girl ain’t got no time for more than one – especially when it comes to characters I didn’t like.

2.5 Stars

ARC provided by the publisher in exchange for an honest review.
Profile Image for Amina .
1,523 reviews
July 22, 2026
✰ 1.25 stars ✰

“We are all the tip of our own iceberg, with secrets that range from little white lies to crimes that can get us put away for life. And you can never truly be sure.”


wow-movie

Well, I can't lie like pudgy pengu here and say that this was a good read that wow'd me in any possible way. 🙄 Perhaps since I read these during the week after work hours, which on both days that I attempted reading, I fell asleep—twice. 😮‍💨 So, the truth is there was nothing compelling about the plot to keep me awake. 😪 It's a shame because I feel that I should be more supportive of female investigative vigilantes who play judge, jury, and executioner.

But, the writing style and tone reminded me of those '40s black-and-white noir films, where the narration is playing in the background as the less than suspicious male protagonist follows the trail to a seductress who might or might not be a pawn or the player in the dangerous scheme he's been hired to investigate. 🥴

“Some mysteries will never be solved.”

So, that feeling never quite left me. Margaux kept presenting herself as this capable know-it-all whose own traumatic past led her to behave that way, but that whole Mr. X history fell really flat. 😑 I could not bring myself to care or be interested in that particular storyline that shed light on what led her to be who she was.

The supporting cast was also bland. I was never quite impressed or intrigued by Bertram's suspicious agenda nor his altruistic motives. Waylen was a dull-spirited husband who, even when shady, was only Slim Shady. 😅 Haha, sorry, I had to find a way to liven up this dismal review. 🙃 Elodie was a supportive cohort, but her presence also dimmed in the eleventh hour.

Suffice to say, not one of my better reads. Let's also ignore the fact it's been two weeks since I've read, cuz I haven't been in the best head space to post a review I wrote two weeks ago, so... 😔 Neither a mystery with its supposed twists and reveals nor suspenseful with tension or danger; it was a struggle from start to finish. Alas, DNF is just not in the cards when I'm always holding out for a hero; well, in this case, at least a turnabout that might save itself from disgrace... 🥀
Profile Image for Dennis.
1,191 reviews2,117 followers
March 19, 2026
I hated the author’s debut, so I was hesitant to pick this one up, but it sounded fun! Margaux lives a double life as a suburban mom and secret vigilante, but her latest mission targeting a powerful tech CEO becomes dangerously personal. While the premise is intriguing, the plot felt predictable and lacked the shocking twists I look for in thrillers, making it less compelling overall. Still, the strong writing and character relationships make it an enjoyable, accessible read—especially for those new to the genre. STARS: 3, PUB: out now!
Profile Image for Pav S. (pav_sanborn_bookworm).
889 reviews33 followers
Review of advance copy received from Netgalley
February 13, 2026
The cover really caught my eye, and I thoroughly enjoyed this engaging read! I can’t wait for the sequel—fingers crossed there will be one!

Margaux leads a dual life as an interior decorator by day and an undercover operative for a mysterious employer by night. Her latest assignment involves exposing billionaire tech CEO Bertram Casimir, who is accused by his sister of stealing her app and is connected to a missing girlfriend. As Margaux infiltrates his world, she finds herself entangled in a web of manipulation and danger, drawn to Bertram's intelligence. When evidence begins to shift, she realizes her life is at stake, and her secrets may be the key to her survival.

We’re introduced to Margaux, Waylan, Mr. X, and Elodie, and what a thrilling ride it is! I love the playful banter and the blossoming friendships. The characters are well-developed, and to fully understand Margaux and Mr. X, we jump around the timeline a bit, but it all fits together perfectly. We also meet Bertram and his sister, and once the story kicks off, it grabs you and doesn't let go until the very end!

This book is a great read, featuring strong female characters who navigate multiple roles effectively. The writing flows smoothly, making it hard to put down. I was eager to see what adventures these characters would tackle next! At one point, I found myself questioning who I could trust as the plot thickened. Suddenly, everyone was pointing fingers at Waylan—oh, but I won't give any spoilers!

This is the perfect read for anyone who enjoys a fast-paced, fun story filled with cat-and-mouse scenarios and female spies. The writing is rich in detail, making everything feel realistic and believable, which really enhances the narrative. If you’re a fan of the Finlay Donovan or Stephanie Plum series, this book is definitely for you. I absolutely loved the writing style—what a fantastic cozy thriller! Now, if you'll excuse me, I need to check on my mother-in-law since she’s out late quite a bit! She could be a spy! Ha!

Thank you, Berkley Publishing Group and Netgalley, for the DRC copy. I am leaving this review voluntarily.
Profile Image for Corinne’s Chapter Chatter.
1,398 reviews60 followers
February 15, 2026
3.5⭐️

Arrggh!! I have such mixed feelings about this one. Why? Because while I was reading, I was completely entertained and propelled forward by a “secret” dangled in front of me like an overfilled balloon—stretching tighter and tighter, threatening to pop at any second. But then… wham. When the secret was finally revealed, instead of exploding with impact, it dropped like it had been filled with lead instead of air—and simply bounced.

To make matters worse, that secret was something that crossed my mind several times along the way, as it reminded me of a similar story I’d read or watched years ago. I figured out most of the twists fairly easily. That said, despite the underwhelming payoff, I genuinely enjoyed the journey getting there. Was it overly predictable? Not exactly—but seasoned thriller readers will likely have a similar experience of seeing the pieces fall into place ahead of time.

I ended up doing an immersion read using both the eARC and the audiobook, which I was really grateful for. It created a dynamic experience and helped keep me engaged. The audiobook narration by Madeline Maby was especially compelling—her sultry voice draws you in effortlessly. I also appreciated her male character voices: the shifts were subtle but distinct, making it easy to tell who was speaking. She narrates at a solid pace for 1x speed, though I listened mostly at 2x. You lose a bit of her inflection that way, but the performance still holds up well.

Because I was listening through the PRH Audio app and couldn’t quite match my natural reading speed, I sometimes paused the audio during high-intensity scenes so I could fully absorb the writing. Overall, I loved the flexibility of the immersion read, but if I had to recommend just one format, I’d go with print—it allowed the tension and details to land with more impact.

Final thoughts:
This was one of those books where the ride was more satisfying than the destination. Even though the central reveal fell flat for me, the buildup, atmosphere, and steady momentum kept me invested until the end. If you enjoy thrillers driven by suspense and emotional tension more than shocking twists, this will still be a worthwhile read—just don’t expect the balloon to pop as loudly as promised.

I am thankful to have received a complimentary eARC from Berkley Publishing via NetGalley and the ALC through PRH Audio Influencers, which gave me the opportunity to share my voluntary thoughts.
Profile Image for Mehva.
1,196 reviews19 followers
Review of advance copy received from Netgalley
January 25, 2026
The plot was pretty interesting, though i guessed the main twist early on. The style is light, easy reading so not a lot of depth even though it is covering a lot of heavier subjects like childhood trauma, being falsely accused of crimes, marital issues but in a more light breezy way. fast read 3.5
Profile Image for Audrey ✨.
270 reviews14 followers
April 28, 2026
DNF at 57%. This story is incredibly boring for a spy thriller and the author repeats the same inner dialogue damn near every chapter. Reading slump is yet to be cured, pray for me!
Profile Image for Amy.
2,904 reviews2,051 followers
March 9, 2026


A Lie for a Lie was such a fun, fast paced thriller with a premise that immediately pulled me in. The concept of Margaux living a carefully constructed double life (by day she’s an interior decorator and devoted wife and mother, by night a covert operative infiltrating dangerous targets) made for a really engaging read. I loved the spy adjacent angle and the constant tension of watching her juggle two identities while trying to keep her personal life intact.

Yes, the premise leans a little far fetched at times, but honestly that’s part of the fun. The cat and mouse dynamic between Margaux and tech billionaire Bertram kept the story moving quickly, and I found myself flying through the pages to see who was actually telling the truth. There are plenty of secrets, past traumas, and shifting motivations that keep the reader guessing about who’s manipulating whom.

Margaux was a standout character for me. Her sarcastic humor added some levity to an otherwise tense story, and I appreciated the way she genuinely tried to balance her dangerous work with being a present wife and mother. That emotional push and pull gave the story a little extra depth. Overall, this was a twisty, entertaining thriller that doesn’t take itself too seriously and delivers a suspenseful ride full of secrets and drama.
Profile Image for Desirae.
3,492 reviews199 followers
May 19, 2026
If you’ve read Lauren DeStefano’s YA work — especially Wither, Perfect Ruin, or The Glass Spare — then reading A Lie for a Lie is a genuinely strange experience. You can absolutely see the same writer underneath the pseudonym: the obsession with fractured families, hidden identities, morally compromised women, and people trapped inside systems built on manipulation. But where Lauren DeStefano’s YA novels embraced heightened dystopian melodrama openly, Ren DeStefano’s adult thriller persona seems determined to package that same energy as sleek domestic suspense. Sometimes it works. Sometimes it becomes so convoluted that the entire thing starts to feel like a parody of modern thrillers.

The premise alone sounds like someone combined three entirely different books into one blender. Margaux is a suburban mom and interior decorator living in Connecticut with her husband and daughter. Secretly, she works for a shadowy vigilante mastermind known only as Mr. X, infiltrating dangerous people and exposing crimes. Her latest target is Bertram Casimir, a billionaire tech CEO accused of stealing an app from his sister and possibly murdering his missing girlfriend. Naturally, Margaux gets emotionally entangled with him while uncovering layers of conspiracies tied to her own past. And then, because apparently the novel decided it wasn’t chaotic enough already, Mr. X turns out to be connected to her in an absurdly personal way.

There were multiple points while reading this where I genuinely stopped and thought: why is this story about suburban mothers pretending to be spies? Why are these women running covert vigilante operations between school pickups and interior design consultations? The book treats this setup with complete sincerity, which honestly becomes unintentionally hilarious at times. Margaux and Elodie conducting espionage while also worrying about parenting schedules feels less like grounded psychological suspense and more like a rejected ABC drama from 2013.

And yet — somehow — it remains compulsively readable.

That’s the frustrating thing about DeStefano as a writer. Even when the plot is objectively ridiculous, she knows how to keep momentum going. The chapters move fast, the dialogue is sharp, and she understands how to drip-feed secrets in a way that makes you keep turning pages even while actively questioning the logic of everything happening. Publishers Weekly praised the “pitch-perfect pacing,” and honestly that’s probably the novel’s greatest strength.

Margaux herself is both the best and worst part of the book. She’s interesting because she’s deeply unstable beneath her polished suburban facade, and DeStefano has always excelled at writing women who are simultaneously competent and emotionally unraveling. But Margaux also feels written according to the current “female thriller protagonist” template: detached, morally gray, hyper-observant, vaguely dissociated, carrying childhood trauma like an accessory. Sometimes she feels like a real character; other times she feels assembled from pieces of Gone Girl and every airport thriller released in the last decade.

The supporting characters are similarly uneven. Elodie is probably the standout because she brings actual personality and unpredictability to the story. Bertram, meanwhile, never becomes as compelling as the novel desperately wants him to be. The book keeps insisting he’s this dangerous intellectual equal to Margaux, but he mostly comes across as another generic tech billionaire with vague menace attached to him. Several reviewers noted this exact problem — that he never fully lives up to the buildup.

But the real issue is the Mr. X reveal.

I don’t even necessarily hate the idea itself. Lauren DeStefano has always written stories where family relationships become grotesquely overcomplicated emotional prisons. That theme is everywhere in her YA work. So revealing that Mr. X has a deeply personal connection to Margaux feels very on-brand for her storytelling instincts. The problem is that the reveal doesn’t clarify the novel — it somehow makes the entire thing even messier. Instead of tightening the emotional stakes, it turns the story into a tangled knot of secret identities, hidden motivations, childhood trauma, espionage nonsense, and vigilante moral philosophy. By the final act, the book starts throwing twists around with such desperation that none of them land with the weight they’re supposed to.

It’s the kind of thriller where every character has three secrets too many.

Still, I can’t say I disliked it. I was irritated by it more than bored by it, and honestly that’s preferable. So many contemporary thrillers feel algorithmically assembled, but A Lie for a Lie at least has personality — even if that personality is deeply bizarre. You can feel Lauren DeStefano’s YA background constantly bleeding through the adult-thriller packaging: the melodrama, the obsession with identity, the emotionally damaged protagonists, the theatrical reveals. Under the pseudonym, she’s clearly trying to write slick domestic suspense, but her instincts are still fundamentally gothic and weird.

Which is probably why the novel works at all.

It’s convoluted. It’s implausible. The suburban spy angle is absurd. The Mr. X reveal made me roll my eyes. And yet I finished the book in basically one sitting because Ren/Lauren DeStefano still knows exactly how to weaponize narrative momentum. Even when I was questioning every single choice she made, I still needed to know what insane thing would happen next.
Profile Image for Alexsis.
243 reviews94 followers
April 1, 2026
For a cat and mouse type of book, I expect to be on the edge of my seat. This book seemed to drag on and wasn’t as thrilling as I would’ve wanted.

It’s definitely interesting, but way more relaxed than it’s made out to be. There were a few twists sprinkled throughout the book and it was kind of like “oh, ok that makes sense” not “omg!! are you serious?”

So I’m just not sure how I felt about this book.

Thank you Berkley for the gifted copy!
Profile Image for Lyna Munoz.
107 reviews
August 31, 2026
Fun, fast paced, on the edge of your seat. I think I am giving this a 3.75 * because of the ending. I wanted it to end differently.
Profile Image for Darinda.
5,980 reviews164 followers
April 1, 2026
Margaux is leading a double life working for a mysterious Mr. X, and her latest assignment is the most changing so far.

Margaux is an interior designer, wife, and mother. She also works for a Mr. X, doing work that exposes people for their crimes. Her latest job involves a tech billionaire accused of stealing an app, and whose girlfriend may be missing.

A Lie for a Lie is a cat and mouse game, with some fun spy stuff thrown in. Secrets and drama combine in this entertaining novel.

I received a digital copy of this book from the publisher via NetGalley in exchange for an honest review.
Profile Image for Kay Oliver.
Author 11 books199 followers
November 11, 2025
Excellent thriller with a strong mystery at the forefront surrounding family and familial secrets. This was well written, but what really drove this story was the cast of characters. Each one was so deliciously intriguing. I would love a second book with this family.
Profile Image for Louis (audiobookfanatic).
519 reviews42 followers
March 18, 2026
Life for a Lie is a psychological espionage thriller by Ren DeStefano, whose thrillers explore family dynamics and morally complex female protagonists—and this book is no exception. It follows a mother who is also a covert field operative with a complicated past, working under a shadow handler known as Mr. X while trying to maintain a normal life for her 10-year-old daughter. Her assignments repeatedly overlap with unresolved trauma from her childhood, and those personal threads gradually become tied to her current missions. The story has popular thriller tropes like an unreliable narrator, a race-against-time structure, secret identities, big brother style surveillance, and buried secrets resurfacing!

The story follows Margaux, a covert operative under Mr. X assigned to investigate billionaire Bertram. She’s a mother to a 10-year-old daughter and has a strained relationship with her ex-operative husband. As the mission unfolds, fragments of her past resurface, including the mysterious fire that killed her parents. The investigation forces her to confront long-buried secrets and question everyone involved.

The story is told entirely from Margaux’s first-person POV. She’s quick-witted and sharp, often thinking her way out of near-catastrophic situations, but also an unreliable narrator. Key parts of her history—especially involving her brother and her parents’ mysterious death—are withheld, which keeps her true nature unclear. Despite that, she’s easy to root for as she remains committed to her vigilante-style work even when it clashes with her personal life and puts her family at risk. Her relationship with her 10-year-old daughter Colette is another interesting thread. Colette is intelligent and observant, similar to her mother, but has no knowledge of Margaux’s real occupation. Margaux and her operative partner Elodie have a sharp, sarcastic dynamic with coded communication while investigating Bertram, giving their partnership a “Charlie’s Angels” vibe.At the core of the story is Margaux’s strained marriage to her husband, who wants her to leave espionage behind. As Margaux keeps secrets from him, the relationship deteriorates further and his unexpected appearances heighten her paranoia, leaving her unsure how much she can trust him!

The story has a slower start, focused on Margaux’s backstory and the setup of her assignment under Mr. X. Once the investigation into Bertram gets into full swing, the pacing picks up significantly. From there, the story has escalating reveals, misdirections, and increasingly risky operations that keep the momentum high. The final 30 percent is the most intense, building toward a high-stakes confrontation involving all key characters, followed by an epilogue with a last-minute twist that leaves room for a potential sequel!

If you enjoy espionage thrillers with fierce female leads who take extreme risks, and chaotic race-against-time stories that stay unpredictable until the end, this is one you’ll want to pick up!
Profile Image for Frankkie.
310 reviews5 followers
February 11, 2026
3.25 stars - This felt like a very standard thriller, complete with the usual genre tropes and a slow peel-back of Margaux’s hidden past. The book clearly centers her secret backstory as the main draw, but I never found it quite interesting enough to fully anchor the story.

The case she’s working for her client never felt especially high-stakes, which muted some of the tension. A lot of the novel lives in Margaux’s carefully curated “fake” ordinary life, and those sections dragged for me. On their own, they didn’t feel strong enough without the criminal thread underneath.

That said, it’s still an engaging enough read. The climax held my attention, and even when things felt a little contrived, it remained a fun, quick thriller, as long as you don’t analyze it too closely.

I received this book as an eARC.
Profile Image for Shelley.
5,678 reviews491 followers
March 19, 2026
*Source* Publisher
*Genre* Thrillers / Suspense
*Rating* 3.5

*Thoughts*

What appeared to be a standalone now appears to be that the author intends to use Margaux in another book to face off against a truly diabolical villain.
Profile Image for Dalia Abbas.
73 reviews3 followers
March 23, 2026
Good but it stressed me out. Unexpected twists and turns. Good if you want a page turner!
Profile Image for cynthia.
130 reviews
June 3, 2026
Guessed the twist in the first 70 pages
Profile Image for Ranjini Shankar.
1,865 reviews89 followers
April 11, 2026
3 stars. The motive was so unbelievable and petty that the big reveal falls apart quickly. I did enjoy the many red herrings but not enough to save this one
Profile Image for Laura UJ.
495 reviews1 follower
June 9, 2026
This became really annoying, really quickly. Margaux and this whole spy thing just didn’t quite hit. As a mom, Margaux failed. I couldn’t believe how irresponsible she was throughout the book. Then things just really went off the rails and became a little too “cinematic” for me.
Profile Image for Stephanie.
939 reviews11 followers
March 19, 2026
This was a departure from DeStefano’s debut HOW I’LL KILL YOU but enjoyable nonetheless. This almost had a cozy vibe to it and the humor throughout kept it very entertaining. Parts were a bit predictable but I did love the twists and turns along the way. One plot hole that irked me was air tagging things - we all know you get an alert if one is following you so it couldn’t happen.
Profile Image for Megan Magee.
1,045 reviews5 followers
October 31, 2025
"We are all the tip of our own iceberg, with secrets that range from little white lies to crimes that can get us put away for life. And you can never truly be sure."

This is such a solid twisting tale of secrets, family, and overcoming. I love that we got to know Margeaux, Waylen, Elodie, and co. I would truly love if this were a series and I could read even MORE about their family. The middle got a touch stagnant, but honestly the plot movement was stellar: I could NOT look away, and DeStefano did a beautiful job painting a full picture of a thriller novel in my opinion. Even Mr. X was given a shot at humanity in this one, and I was here for that. Thanks so much to the author and Berkley Publishing Group for providing me with this eARC! All opinions are my own, and all quotes are not determined yet until publication date.
Profile Image for Robyn Goldman.
183 reviews17 followers
March 9, 2026
Margaux is not who she appears to be. By day, she's a mom, a wife, and an interior decorator... but the job she's passionate about is her work with Mr. X. She works in the shadows, infiltrating the lives of criminals and exposing their crimes, ensuring that they pay for what they've done. Her latest target is Bertram Casimir, a billionaire tech CEO. His sister claims she was the one who created the app that launched his career... oh, and that his girlfriend recently disappeared and that he was responsible. As Margaux begins to work, she finds herself under Bertram's spell...and if she's not careful, her own secrets may be exposed instead of his.

I was so excited to read this book! I really enjoyed How I'll Kill You and I couldn't wait to read my second Ren DeStefano thriller. Unfortunately, while DeStefano's debut novel was highly unique and twisty, A Lie For A Lie was not. The idea in itself was original: a vigilante who fell in love, became a PTO mom, and juggled her secret life with her family. The storyline itself was very straightforward. I guessed the plot twists long before they happened. Margaux's secret did not feel like the earth-shattering secret it was in her head throughout the book. Moreover, Margaux was supposed to be this accomplished vigilante, but she kind of acted like this was her first job.

What I did love was the writing style and the characters. I loved the relationships in this book... most of them at least. I loved Elodie and Collette and I loved each of their relationships with Margaux. The book was well-written. It was descriptive and flowed nicely. It was an easy read even though it tackled some tough topics. It was difficult for me to rate this book. My 3-star rating typically means the book wasn't for me but someone else will really enjoy it. That is accurate here. I'm not giving up on Ren DeStefano's books because she is very talented. This particular thriller was not for me. I'm a pretty dedicated thriller reader and I'm a big fan of plot twists. I love being blindsided and it's hard for me to love a book when there's no element of surprise. I do think that this is a great introduction to thrillers. Readers just dipping their toes into the pond will love this book. This one's a Reader's Choice. If you're like me and need those plot twists no one sees coming, you might want to spend your time with a different book, but if you're new to thrillers or don't mind a more obvious ending as long as the book's well written, you'll really love this book.

Note: I received an ARC of this book from NetGalley and am leaving this honest review voluntarily.
Profile Image for Krystal.
943 reviews212 followers
May 3, 2026
The title of this novel drew me in suggesting an exchange of lies and it delivers just that. However, there simply isn't enough tension to propel the narrative the way a thriller should be paced. There was a lot of repetition that could have been cut including a pet peeve of mine when "a really bad thing" happened, and readers are constantly reminded of it but not told what it is until much later. The revelation smacked of convenience and by the time it was brought to light there was nothing to do but fall flat. Explaining and moving on in an earlier chapter would have been a better move.

Margaux is leading a double life. She's a suburban wife, mom, and interior decorator, in her spare time she insinuates herself into the lives of shady individuals to expose their crimes with the help of the shadowy Mr. X. Her latest target is Bertram Casimir billionaire tech CEO and a bit of a recluse. His sister claims he stole her app to make his fortune. Margaux quickly realizes he has a missing ex-girlfriend as well. Bertram is better at reading people than Margaux anticipated igniting a game of cat and mouse. The more Margaux learns about Bertram the less sense everything makes. What began as another routine takedown has put everything Margaux holds dear on the line including her life.

The novel opens a little weak but finishes strong so the further I read the more I liked this. There were a few small twists and clever red herrings along the way that surprised me, but the big reveal was obvious. There is a lot going on in this story there's motherhood, marriage, school life, familial ties, danger, the tech world, trauma, action, and so many lies. Maybe it was so much that it watered down the stakes because they didn't feel high or even moderate.

There was a lot of promise in the premise, a less is more approach would've tightened up pacing issues. The conversational writing style was a plus giving insight into Margaux. Her daughter was probably my favorite character her clever edge felt realistic.

Be sure and check out other reviews if this sounds like your jam as reading is subjective and there are some glowing reviews for this one.

Thank you to Berkley Publishing for providing an ARC via NetGalley. All thoughts and opinions are my own.
Profile Image for Nicole.
665 reviews89 followers
March 12, 2026
Double Lives and Deadly Games

Ren DeStefano’s A Lie for a Lie wastes no time throwing readers into the double life of Margaux, a suburban mother with a secret career as an undercover investigator. On the surface, Margaux is the picture of normalcy: she juggles motherhood and interior design with practiced ease. But behind closed doors, she’s locked in a high-stakes battle with a ruthless tech billionaire, and the line between her identities gets thinner with every chapter.

The plot crackles with tension from the first page. Margaux’s seemingly perfect life unravels as her assignment drags her into a cat-and-mouse game that threatens everything she’s built. The pacing is relentless; twists stack up, and the stakes keep rising, making it tough to put the book down.

Margaux herself is the novel’s beating heart: smart, complicated, and just flawed enough to feel real. Her struggle to keep her deception intact while shielding her loved ones gives the story its emotional punch. DeStefano delves into themes of loyalty, identity, and what we’ll risk for the people we love. The villain, a tech billionaire with a chillingly cold streak, ups the psychological ante, and their battle feels both personal and dangerous.

DeStefano’s writing is taut and immersive, pulling you inside Margaux’s head and ratcheting up the suspense with each chapter. While the prose can come across as a bit flat, the book’s overall energy and sharp plotting more than make up for any stylistic simplicity.

There are quibbles: a few side characters feel thin, and some plot twists require a generous suspension of disbelief. Veteran thriller fans might see certain surprises coming. Still, Margaux’s journey is so propulsive that these flaws fade into the background.

All told, A Lie for a Lie delivers exactly what you want from a psychological thriller: tension, secrets, and a protagonist you’ll root for even when her choices make you wince. If you like your suspense with a domestic edge and a heroine who’s anything but ordinary, this one’s worth your time.

Rating: 3.5/5
Profile Image for Carrie Shields.
1,881 reviews235 followers
September 15, 2025
𝐈𝐭'𝐬 𝐭𝐡𝐞 𝐚𝐜𝐭 𝐨𝐟 𝐩𝐢𝐞𝐜𝐢𝐧𝐠 𝐭𝐨𝐠𝐞𝐭𝐡𝐞𝐫 𝐚 𝐩𝐮𝐳𝐳𝐥𝐞 𝐚𝐧𝐝 𝐰𝐚𝐭𝐜𝐡𝐢𝐧𝐠 𝐚 𝐬𝐢𝐭𝐮𝐚𝐭𝐢𝐨𝐧 𝐟𝐢𝐧𝐚𝐥𝐥𝐲 𝐦𝐚𝐤𝐞 𝐬𝐞𝐧𝐬𝐞. 𝐈𝐭'𝐬 𝐠𝐞𝐭𝐭𝐢𝐧𝐠 𝐭𝐨 𝐭𝐡𝐞 𝐭𝐫𝐮𝐭𝐡, 𝐰𝐡𝐢𝐜𝐡 𝐢𝐬 𝐚𝐥𝐰𝐚𝐲𝐬 𝐨𝐛𝐣𝐞𝐜𝐭𝐢𝐯𝐞 𝐨𝐧𝐜𝐞 𝐢𝐭 𝐛𝐞𝐜𝐨𝐦𝐞𝐬 𝐜𝐥𝐞𝐚𝐫.

The prologue to this book was absolutely gripping, and I knew right away this was going to be a worthy follow-up to HOW I'LL KILL YOU. Margaux leads a double life with a dizzying array of moving parts. By day, she's an interior decorator, loving wife, and doting mother. But by night, she's a female vigilante working for a mysterious employer known only as Mr. X. Her targets are chosen, and it's her job to infiltrate their lives, gain their trust, and expose their crimes, ensuring that justice is served.

Her latest target is Bertram Casimir, a billionaire tech CEO whose sister claims he stole her app to make his fortune. Even worse, his girlfriend recently went missing and any mention of her has been mysteriously scrubbed from the headlines. Unfortunately, Bertram is not like Margaux's other prey--he's whip-smart, cunning, and sees right through her. For the first time, Margaux finds herself stumbling in her role as predator. Lines begin to blur before they're abruptly removed altogether. Have the roles been reversed, or will one last lie reveal itself?

I loved the pacing and both Margaux's character development and backstory. This was one of those thrillers that has moments of dark humor to balance out some of the more grim elements. If you love the secret lives trope, you will find this to be a fun, action packed thriller that will catch you off guard more than once. Many thanks to Berkley Publishing for the early copy. Look for this one March 10, 2026.
Profile Image for Misty (Red's Romance Reviews).
3,530 reviews6 followers
Review of advance copy received from Netgalley
January 26, 2026
To look at Margaux you would never know that she leads a double life, one that has her moonlighting as a vigilante that brings criminals to justice at night while everyone around is safe at home and tucked into bed... but that's the life she leads, and she is darn good at it too. But her newest mark isn't like the others, he's good at what he does too, and he wants his secrets to stay hidden, and he'll go to great lengths to make it happen.

A Lie for a Lie is thrilling page-turner that will have you on the edge of your seat the whole way through. When Margaux is given her newest assignment she soon learns that he isn't like the others, he comes with a skill set she wasn't anticipating and he has the means to take her down... and she can't let that happen. Before long she feels like she is the criminal and he is the one that will bring her to justice, there is no line that this man will not cross to keep himself safe and his secrets safe, even if it means putting an end to Margaux.

From beginning to end this action-packed read will keep you on your toes, it's almost impossible to predict the ending to this one, but I dare you to try! I really enjoyed what I found between the pages here and I know you will to if you give it a chance...it's impossible to put down! Highly recommend!

I requested an advanced copy of this title from the publisher, via NetGalley request, and I am voluntarily leaving my honest and unbiased opinion.
Profile Image for Angel **Book Junkie** .
2,185 reviews14 followers
Review of advance copy received from Netgalley
February 25, 2026
Thank you to Ren DeStefano, Berkley Publishing Group, and NetGalley for a copy of A Lie for a Lie in exchange for an honest review.

I absolutely fell in love with the characters in this book — both the good and the bad. Each one felt distinct and memorable, and Mr. X, with his mysterious energy, had me completely hooked. Margaux and Elodi were standout characters for me, bringing personality, strength, and intrigue that made the story even more enjoyable.

The cover immediately drew me in, and thankfully the story delivered an equally engaging reading experience. While I went in expecting more of a psychological thriller, the book felt more like an espionage-style, sleuthing, cat-and-mouse mystery — and honestly, that worked in its favor. It was quick, entertaining, and incredibly easy to read, constantly making me want to turn the page.

Much of the story hints at a disruptive and shadowy past surrounding Margaux, and while the reveal wasn’t quite what I expected, it still provided satisfying answers to lingering questions rather than relying purely on shock value.

✨ Final Verdict: A fast, character-driven mystery packed with intrigue, charm, and just enough suspense to keep you hooked. Not quite the psychological thriller I expected, but an addictive and thoroughly enjoyable read that left me hoping this becomes a series — because I’m not ready to leave these characters behind.
Profile Image for Bbecca_marie.
1,885 reviews61 followers
Review of advance copy received from Publisher
March 6, 2026
Book Review 📖💍 #berkleypartner thank you so much @berkleypub for the free copy! #berkley

A Lie for a Lie
by Ren DeStefano
out Today!

Margaux lives a double life. By day, she’s a successful interior decorator with a seemingly perfect marriage. By night, she works for a mysterious employer known only as Mr. X, infiltrating the lives of dangerous targets to expose their crimes.

Her newest assignment is Bertram Casimir, a reclusive billionaire tech CEO accused by his sister of stealing her app—and whose girlfriend has recently gone missing. But Bertram quickly sees through Margaux’s carefully crafted persona, matching her every move.

As the lines between hunter and prey begin to blur, Margaux finds herself drawn to the very man she’s meant to expose. When the truth behind the case starts to unravel, she realizes this assignment may cost her far more than just the job. One final lie might be the only thing that can save her.

💍 My thoughts:

A double life, a mysterious billionaire, and secrets everywhere… this one had me hooked from the start. After reading and loving How I’ll Kill You, I knew I needed to get my hands on this new release from Ren DeStefano. Just like I expected, I absolutely devoured it. I really love this author’s writing style. It’s the kind that keeps you turning pages while slowly unraveling layers of secrets. Even though I’m not usually drawn to spy stories, this one completely worked for me. It was fast paced, engaging, and full of tension as the lines between truth and deception started to blur. If you enjoy twisty thrillers, morally gray characters, and stories packed with secrets and mind games, this is definitely a book to give a read. At this point I will be reading anything DeStafano writes! A Lie for a Lie is out TODAY 3/10/26!

Happy reading 📖💍🔍
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