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When We Were Monsters: The compulsive new thriller from the bestselling author of All the Bright Places

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Brought to you by Penguin.

The compulsive new thriller from multimillion-copy bestselling author Jennifer Niven.


Eight students walk into an exclusive writers’ retreat, but only one will walk out with a life-changing opportunity to realize their creative dreams.

Effy is piecing together a story about the tragic betrayal that led to her mother’s death. Arlo hopes to publish a novel – but he’s also trying to start a new chapter with Effy after he broke her heart and ghosted her three years earlier.

Their mentor is Meredith Graffam, enigmatic writer, director and actress, whose compelling accounts of her own near-death experience on the same retreat decades before continue to spark controversy.

But this celebrated teacher is not all she seems, and her students gradually realize they are fighting for something much more primal than academic advantage. As Graffam’s unorthodox teaching methods push them past breaking point, they reveal their darkest secrets, take unthinkable risks and slowly start to turn on one another. But Graffam never expected they would turn on her . . .

The Secret History meets One of Us is Lying in the most gripping thriller of the year.

Jennifer Niven 2025 (P) Penguin Audio 2025

Audible Audio

First published September 2, 2025

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About the author

Jennifer Niven

17 books15.4k followers
JENNIFER NIVEN is the #1 New York Times and internationally bestselling author of All the Bright Places, Holding Up the Universe, and Breathless. Her books have been translated in over 75 languages and have won literary awards around the world.

An Emmy-award winning screenwriter, she co-wrote the script for the All the Bright Places movie— currently streaming on Netflix and starring Elle Fanning and Justice Smith. She is also the author of several narrative nonfiction titles and the Velva Jean historical fiction series.

Her latest YA novel, When We Were Monsters, was published September 2, and she has an adult novel-- Meet the Newmans-- releasing January 6, 2026.

Jennifer divides her time between coastal Georgia and Los Angeles with her husband and literary cats.

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5 stars
408 (13%)
4 stars
1,064 (35%)
3 stars
1,106 (36%)
2 stars
332 (11%)
1 star
80 (2%)
Displaying 1 - 30 of 692 reviews
Profile Image for Nilufer Ozmekik.
3,225 reviews63.1k followers
April 13, 2026
Before diving into this one, I skimmed a few mixed reviews—but the premise had already hooked me. A dark academia setting, an eerie mansion cut off from civilization during a storm, and a group of ambitious young writers competing for a life-changing opportunity? Yes, please! Add Jennifer Niven’s name to the cover—whose past works I’ve enjoyed—and I was sold. I went in with high hopes and braced myself for a slow-burn thriller, and that’s exactly what I got (with some surprises along the way).

Interestingly, I happened to be watching Nine Perfect Strangers season two while reading this, and I couldn't ignore the uncanny similarities. This felt like a younger, more literary twist on that concept—a YA version set in a hauntingly atmospheric writing retreat instead of a wellness spa, run by a woman who’s just as enigmatic and unsettling. Eight talented students are invited to this prestigious and highly secretive program, led by the one and only Meredith Graffam—a multi-award-winning author, playwright, filmmaker, and actress with a notorious past. There’s scandal clinging to her name, from a possible wrongful conviction tied to her best friend’s death to accusations of plagiarizing her bestselling book from her ex-husband. And yet, despite the rumors (or perhaps because of them), her mystique and influence make her irresistible to young writers.

The competition she proposes is bold: one of these students will walk away with a $15,000 scholarship and the chance to see their work adapted for publication or the screen. That dream alone is enough to make anyone ignore the red flags. But as soon as the retreat begins, Meredith’s methods spiral from eccentric to extreme. She demands emotional vulnerability, confession, and fear-facing tasks that veer into the terrifying—like leaping from dangerous heights or standing in the path of speeding traffic. And those are just the milder examples.

From the very beginning, I was especially drawn to the dual POVs of Effy Green and Arlo Ellis-Noon. Effy is a character with a heavy past—her father killed her mother in a drunk driving accident, served prison time, and was recently released. She's lived a quiet, emotionally contained life with her grandmother, and writing has always been her outlet. When she gets accepted into the retreat alongside her best friend Ness (a shy, perceptive scholarship student with major wallflower vibes), she’s shocked to find Arlo there too—the boy who once humiliated her, ghosted her, and still manages to stir up complicated feelings. Their chemistry, buried history, and unresolved tension added an engaging emotional layer that I really enjoyed watching unfold.

Arlo, for his part, is a classic tortured genius: clever, sarcastic, hiding grief and guilt over the loss of his best friend Jonah. He wants redemption, maybe even reconciliation—with both his family and Effy. Their connection isn’t just romantic tension; it’s layered with heartbreak, unfinished conversations, and trust slowly being rebuilt.

The rest of the group is a mix of personalities that keeps the story on edge. There's arrogant, polished Isaac Williams—who sees the retreat as his birthright; nosy and brash Peter Tobin—who brings all the chaotic energy of a tabloid heir; Leela Kim—determined to step out of her twin’s shadow and forge her own path; Ramon Santos—queer, principled, and constantly on the outside looking in; and Joey Fiske—who, admittedly, felt a little underdeveloped and didn’t leave much of an impression.

As the days unfold and Meredith’s psychological games intensify, students begin to unravel, secrets come to light, and the boundary between mentorship and manipulation grows dangerously thin. The atmosphere becomes increasingly claustrophobic, tension rises, and the creeping sense of dread—something I always appreciate in thrillers—settles in like fog over the estate. The looming mystery of what’s really going on keeps you guessing: is Meredith a genius with unconventional (albeit disturbing) methods, or is she completely unhinged? Is the competition even real? Or are they just pawns in some elaborate personal experiment?

While the setup was compelling and the characters intriguing, I’ll be honest—the pacing dragged quite a bit in the first half. I had to push myself through some slower sections that leaned heavily into introspection and emotional backstory. It’s not a flaw per se, but it did affect my overall engagement. That said, once the second half kicks in, the stakes intensify, the twists arrive, and the plot tightens into a suspenseful, high-stakes climax that was well worth the wait.

The strength of this novel lies in its chilling atmosphere, emotionally layered characters, and the way it plays with themes of ambition, fear, trauma, and identity. There’s a deliciously sinister edge to it all—the kind of book that makes you feel like something is watching from the shadows, waiting to pounce.

Overall, I’m rounding up my 3.5 stars to a solid 4. This is a dark, eccentric, and moody YA thriller that will definitely appeal to readers who love locked-room mysteries, unsettling mentorship dynamics, and slow-burn psychological unravelings. If you have patience and a taste for character-driven storytelling with a touch of the macabre, it’s worth checking out.

A huge, heartfelt thank you to NetGalley and Random House Children’s Books / Knopf Books for Young Readers for sharing this hauntingly unique digital reviewer copy with me in exchange for my honest thoughts!

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Profile Image for Brend.
848 reviews1,824 followers
October 6, 2025
girl, i don't care how good of a writer you were, your ass is getting sued to death day 1

edit: i just noticed it sounds like it could be about the author lol, it's about the character. hope you have a nice day Jen 🙂‍↕️
Profile Image for Kobe.
513 reviews431 followers
September 1, 2025
3.5 stars don't you just love it when your teacher is totally and utterly mad
Profile Image for Haley.
634 reviews12 followers
September 28, 2025
I received a copy from NetGalley & Penguin Teen Canada in exchange for an honest review.

Unfortunately this was nothing like the premise makes it seem. This is largely a (pushing-it) YA romance, with some “mystery/thriller” elements that come and go from the 60% mark onwards.

I think this would have been stronger with only 1 POV instead of 2 alternating, because the FMC and MMC chapters are very hard to tell apart in narration style.

The book starts with the first sentence saying they killed their teacher. I expected some build up, but the house/“dark academic” setting lacked any atmosphere, and we don’t return to this plot until the last 95% of the book. I think the reason why books like “if we were villains” work is because the deaths in question don’t occur at the very end but instead are an obstacle in the mid point forward.

Overall, didn’t deliver on what it promises and the writing wasn’t very engaging.
Profile Image for Sam.
129 reviews5 followers
November 4, 2025
The author’s obsession with 15 year olds having sex is fucking weird
Profile Image for Rosa.
707 reviews44 followers
Did Not Finish
December 15, 2025
DNF @20%
I just cannot bring myself to care about anyone or anything happening in this book.
Profile Image for Muffinsandbooks.
1,869 reviews1,430 followers
June 7, 2026
Je ne sais pas bien quoi en penser : d’un coté j’ai eu beaucoup de mal à apprécier, à comprendre les personnages, à trouver du sens à leurs comportements, à voir au delà de la manière un peu pédante de présenter les choses et d’aborder l’écriture ou le processus créatif. D’un autre côté, j’ai malgré tout été happée par l’histoire et son ambiance… ? Du coup je ne sais pas du tout comment noter ce livre ou même vous dire ce que j’en ai pensé ! Ce qui est indéniable, c’est que c’est une expérience de lecture particulière et un livre qui sort des sentiers battus ! Avis aux amateurs du coup…
Profile Image for A Mac.
1,786 reviews232 followers
September 11, 2025
This work is told from dual POVs. In one of the POVs the character would sporadically use the second person to refer to someone, but other times would remain in the third person. I really disliked this as it felt disjointed and somewhat sloppy. I also disliked that the prologue revealed the big event of the final portion of the book - this greatly took away from tension that could have been present otherwise.

I know this is YA, but I also really disliked the complete turnaround that happened with the "romance." It almost felt like Effie's feelings changed with the turn of a page. But in other instances aside from the romance, it felt like this book took much too long to achieve what it was trying to.

Overall this wasn't a bad read, but it wasn't memorable for me. If you're looking for a YA read that is more like a dark second-chance romance than a mystery/thriller, you may enjoy this one.
Profile Image for Erin.
3,188 reviews432 followers
June 30, 2025
ARC for review. To be published September 2, 2025.

3 stars

At a fancy pants boarding school eight students are selected for a special January term to be taught by multi-hyphenate and massive star (and alum) Meredith Graham. However, Graffam’s methods of instruction are as unusual as she is, and borderline unethical, but she offers so much the students can’t say no.

The book is narrated by two of the students, Effy and Arlo, who have their own history. It’s all a bit intense (not to read about, but definitely too much for high school students to be faced with.) It’s a YA book and young adults will probably like it.
Profile Image for Iris.
268 reviews22 followers
June 8, 2026
When we were Monsters 
Author: Jennifer Niven

When We Were Monsters was my first book by Jennifer Niven, and it definitely won't be my last.

The story follows eight students from an elite school in England who are chosen to attend an exclusive three week writing course led by the famous author and actress Meredith Graffam. What starts as a once in a lifetime opportunity quickly turns into something much darker when Meredith begins pushing her students to their limits.

I absolutely loved the atmosphere of this book. The isolated cottage setting, the dark academia vibes, and the gothic elements created a constant sense of tension and unease. The plot was nerve wracking, packed with secrets, manipulation, and twists that kept me guessing until the very end.

The characters all have complicated pasts, and I enjoyed following Effy and Arlo, whose shared history added an emotional layer to the story. As Meredith pits the students against each other and forces them to face their deepest fears, the suspense only continues to build...

What really kept me hooked was the growing mystery surrounding Meredith. With tensions rising and danger lurking around every corner, I was constantly questioning who could be trusted and what would happen next. The story had me completely invested from beginning to end.

If you enjoy atmospheric thrillers, dark academia settings, gothic touches, and plenty of suspense, I highly recommend When We Were Monsters.

Trigger warnings:
Murder, violence, death (child and parent),
Grief and loss, child abuse, emotional abuse,manipulation, mental health problems,
references to suicide, alcohol and drug use,
Blood, sexual content (moderate)
Profile Image for Krickette.
151 reviews211 followers
Did Not Finish
June 7, 2026
DNF

TOO SLOW FOR ME…
it must be written for someone else! 😊
On to the next! 💕
Profile Image for Gergana.
160 reviews
March 23, 2026
Loved it! The style, the dynamics, the topic, the structure, everything. Lovely :)

"You have to pick the places you don't walk away from."
- Joan Didion
Profile Image for madison  kate.
46 reviews
August 17, 2025
Received an ARC from work!

Oh my god. This book literally called my name when we received it in. Upon reading the first line, I was HOOKED. Effy, Arlo, Ness, Issac & Meredith dragged me headfirst into a Dark Academia Wonderland. It is very similar to If We Were Villains, but instead of my love of acting that M.L Rio used as a backdrop for the mystery, Niven uses my other love of writing boot camp for her murders. I didn’t know I needed a book like this until I picked it up, it felt like it was written for me. PRE-ORDER IT NOW!!!
Profile Image for Lauren | Wordsbetweenlines.
1,189 reviews24 followers
August 30, 2025
4.5⭐️

Surprising no one, this is one of my most anticipated reads of the year. Jennifer Niven is easily one of my favourite authors and I feel like I’ve waited so long for more of her words.

This is a dark academia young adult psychological thriller. It was atmospheric, spooky, and kept me questioning many things. I both wanted to be there with them and also as far away as possible.

I was captivated by the characters and the details, and the storyline made it hard to put it down.

This was exactly what I hoped for.

Pub Date: Sept 2

Thank you penguinteen for the earc 🤍🤍
Profile Image for PinkAmy loves books, cats and naps .
2,835 reviews255 followers
September 11, 2025
I usually love Jennifer Niven books, but WHEN WE WERE MONSTERS didn’t cut it for me.
The two main characters were well-developed, imperfect, interesting and easy to champion. Niven’s word-building was beautiful and the strongest part of the story.

The ridiculous plot premise was a turn off. A boarding school would never allow a famous writer and actress to run a workshop without any school personnel present. The underwhelming story was slow-paced and held no tension. WHEN WE WERE MONSTERS lacked plot twists and surprises. The bad guy was evident from the beginning.
Profile Image for Bookalicious-Inc.
149 reviews10 followers
February 19, 2026
⭐️⭐️.5

This had such an interesting plot and premise, but the execution lost me. I just found it really boring and too much of a slow burn. I didn't connect with any of the characters and everyone felt pretentious and annoying. So sad, because I thought I was going to absolutely love this. Some of the writing and sex stuff all felt really cringe since these are teens.
Profile Image for Ренета Кирова.
1,374 reviews60 followers
February 18, 2026
Четенето на тази книга започна трудно за мен и дълго време не успявах да навляза в сюжета. Сякаш не можех да си паснa с героите и мрачната обстановка. С напредване на действието напрежението се натрупа и вече не бях в състояние да спра да чета. Книгата е психологическа мистерия с увличащ сюжет и необичайни персонажи.
Действието се развива на мрачно и зловещо място, което излъчва меланхолия и те принуждава да се изправиш лице в лице с най-мрачните си мисли и чудовищата в душата си. Поведението на обаятелната и талантлива писателка Мередит Графам внася още повече загадъчност в повествованието и ме накара да се замисля накъде ме води действието. Всеки от героите имаше своите травми, слабости и терзания. Никой от тях не беше съвършен.
Осем младежи са затворени в мрачно имение с тъмно минало. Самата местност сякаш е пропита от безпокойство. Цялостното усещане е за нещо зловещо, спотайващо се в сенките. Тръпката идва от това, че не можеш да разбереш откъде точно идва опасността, макар да предположих част от сюжетните линии.
Повествованието се води от името на Ефи и Арло, влюбени, разделили се преди три години. Чувствата им са все още силни, но се разгръщат на фона на съперничество, предизвикателства и манипулация. Докато Ефи се поддава лесно на заблуда, то Арло усеща, че има нещо нередно. Преживяното напрежение ги обвързва още по-силно.
Авторката притежава дарба за "атмосферно писане". Цялата книга е натежала от злокобност, мрак и напрежение. "Виждаш" историята в сиви нюанси, а страхът се усеща като нещо физическо. Злото има много проявления и всеки, малко или много, крие някакво чудовище в себе си. Ситуацията, в която са поставени, провокира към размисъл. Никога не бих искала да изпадна в подобна на тяхната ситуация, която да ме принуди да разбера дали и аз бих постъпила по същия начин.
Profile Image for laura.
397 reviews33 followers
September 18, 2025
3,5/5 ✰

kicking off early autumn the only way i know how : reading a dark academia book. i was immediately absorbed by the atmosphere of the story, by its mysteries and the characters’ complex personalities

i’d say the real asset of this novel is how the power dynamics between the “master” and the students are depicted. it’s always interesting to see how far people are willing to go under the influence of someone they admire… manipulation, power play, darkness and secrets are without a doubt the watchwords of this book

”i don’t want to make myself so goddamn small anymore. (…) i’d like to make myself as large as possible. and i’d like to feel like i belong”
Profile Image for Anna Kova.
49 reviews104 followers
December 12, 2025
3,5 ⭐️
Ich hatte eine richtig gute Zeit mit dem Buch. Hab die prämisse sehr geliebt, Teenager abgeschottet in einem geheimnisvollen Anwesen mit einer Lehrerin die mysteriöse Absichten hat. Leider hatte es für mich auch im Vergleich zu anderen Dark academia Büchern irgendwie keinen richtigen roten Faden. Das „warum?“ wurde meiner Meinung nach zu wenig behandelt. Dafür ging’s im Mittelteil viel um die Romance die dieses Buch gar nicht nötig hatte. Hätte mir so gewünscht mehr über die Beweggründe einzelner Charaktere zu erfahren. So hatte das Buch keinen Plottwist (weil man direkt zu Beginn erfährt, was passiert) und die Tiefe hat gefehlt. Ich würde es aber trotzdem als Einstieg in Dark Academia empfehlen. Aber da ist Luft nach oben!
Profile Image for Jeann (Happy Indulgence) .
1,066 reviews6,629 followers
April 7, 2026
I'm always up for a good murder mystery thriller, so when I saw this release by Jennifer Niven, I had to pick it up. We're introduced to a group of aspiring teen writers who have been given the opportunity to compete for a publishing contract from a famous author, during a trip.

The premise certainly drew me in, as well as learning the secrets between each person and what drove them to write. From Effy's loneliness after losing her parents, to Arlo's guilt over his past, there's a lot of angst and confessions that are laid bare during the trip.

Meredith herself was an unconventional famous author, and I felt like much of her persona was fake. A lot of her fame is built up in the other characters heads.

The book does stall a lot after the premise, it became less about the writing and what was happening in the competition and more about Effy and Arlo's romance, which I didn't felt very interesting. There was a lot of unresolved feelings explored, and the discussion about the Call of the Void happens repetitively throughout the book. The plot is made to be unsettling and to keep us guessing, but I found some of the characterisation was shallow and detracted from the experience.

As for the dark academia part - aside from the characters being in high school, I didn't really see how this applied? As most of the story happens to the characters apart from their studies. There's a few connections to literature and writing sprinkled into the book, but I found this theme to be a stretch.
Profile Image for Natasha  Leighton .
816 reviews455 followers
September 9, 2025
Told through the dual POV of students Effy and Arlo, and set within an isolated mansion steeped in gothic imagery and psychological tension. This was a jaw-droppingly suspenseful, Dark Academia Thriller I was completely obsessed with!

It follows a group of students in a competitive storytelling workshop, where its charismatic, and unreliable teacher (Meredith Graffam) attempts to cultivate their grief, trauma and ambition—to shockingly deadly effect.

And I absolutely loved it! Jennifer Niven’s prose was soo atmospheric with a gothic, morally ambiguous undertone that had our characters confronting their own morality, and what they’re willing to do to succeed.

I really enjoyed exploring Effy and Arlo’s POVs, which gave us not only a front row seat to Graffam’s individually tailored manipulations. But also, insight into how two people (each with their own trauma) explore the same toxic environment with different results.

I won’t go into the details in case of spoilers, but I will say Effy and Arlo’s respective experiences were really compelling. Especially in their contrasting vulnerabilities, moral complexities and complicated romantic history.

Though I will say, Meredith Graffam, despite not being a POV character, really steals the show. Mostly due to her unorthodox actions (and unsettling escalations.) But also because she’s such a well written antagonist!

Like an unhinged Mr. Keating (from The Dead Poet’s Society) she manipulates her students into ever more dangerous situations; the chaotic aftermath of which she seemingly thrives on. And in my opinion, perfectly embodies the novel’s overarching theme: what defines a monster, or drives someone to commit monstrous acts.

I don’t think my words can truly do this novel justice! So if you love gothic, dark academia settings, atmospheric tension or morally ambiguous characters (who linger long after you’ve finished.) Then I highly suggest checking this out! But do check the TWs.

Also, thanks to Penguin UK for the proof.
Profile Image for Tracy Shouse.
258 reviews7 followers
June 10, 2025
All the Bright Places is one of my all-time favorite books so when I saw that Jenifer Niven had a new book coming out, I was so excited! Niven tackles a genre that she loves but has never written. When We Were Monsters is a psychological thriller that explores the concept of free will and both the light and darkness that dwells in each of us. I loved the prose and the interwoven literary references such as the works of Mary Shelley and Sylvia Plath. The setting plays a huge role in providing a dark suspenseful atmosphere. I mean who doesn't love an isolated New England estate on the grounds of an elite boarding school in the middle of the winter where a murder happened many years ago. Eight students were chosen to attend a three-week immersive writing workshop under the mentorship of a highly acclaimed bestselling author, actress, director, and screenwriter. The dual POVs is very interesting especially since Effy and Arlo had a past together. It doesn't take long before it becomes apparent that Meredith, the mentor, is a bit deranged as some of her "lessons" are questionable and even dangerous. Each student feels a personal connection with Meredith, but the lines of trust become blurred as they discover they are being manipulated and pitted against one another. The stakes are high and the winning student at the end of three weeks will win a 15,000 scholarship and have their work published and produced. This is definitely a different version of Jennifer Niven but it's an enjoyable book that is hard to put down.
Profile Image for Ashli Hughes.
681 reviews236 followers
April 17, 2026
I really really enjoyed this, I would say YA mystery is my guilty pleasure except I don’t feel guilty about it- so instead it is just my pleasure.

I was hooked into this from the very first pages and I think it encapsulated the dark gloomy mood of dark academia. the idea of a select few students staying in an old building filled with riches to fight for the place of dreams coming true under the guidance a famous writer.

I liked having the dual POVs as I think it added to the mystery even more, I just wish we heard from all of the characters rather than a select 2- almost having more mc rather than a large cast of supporting characters.

I really liked the slow turn up of insanity and dangerous, it made you feel as though you were part of the weird goings on.

overall, a fast paced entertaining read.
Profile Image for Samantha Matherne.
925 reviews65 followers
May 21, 2026
The ending is revealed a bit at the beginning, but I really enjoyed the journey that reveals how the final group gets pushed to that point. Both of the main narrators convey strong emotions through their readings, too, really giving the reader a sense of dread and urgency. Great dark academia that gives off Gothic vibes, even without the often found magical elements.

Thank you to libro.fm and Penguin Random House Audio for access to this audiobook.
Profile Image for Minsoo.
131 reviews3 followers
Did Not Finish
November 22, 2025
Dnf @14%

I think this is a good book but just not for me because it's too ya for my personal taste! I do think the plot is interesting and a lot of people will enjoy it!
Profile Image for Joshua Strank.
240 reviews62 followers
February 28, 2026
This had so much potential but for me it just was super boring at points with not a lot happening. The dialogue just felt slightly over the top and wordy in areas that just made the storyline feel kind of clunky. I also just didn’t care for any of the characters if I’m being honest with you . I did enjoy the last 100 pages as that was definitely the saving factor of this for me with a lot more reveals and links to the past. But other that that I just wasn’t a massive fan of this one :(
Displaying 1 - 30 of 692 reviews