
Five teens enter detention, one doesn't survive. "One of Us Is Lying" - the 267-week NYT bestseller translated into 40+ languages - reimagines Breakfast Club with a murderous twist. Who's behind the deadly secret that's captivated readers worldwide?
Karen M. McManus is the #1 New York Times bestselling author of One of Us Is Lying and a leading voice in young adult thriller fiction. Born in 1969 near Boston, she holds a degree in English literature from the College of the Holy Cross and a Master of Arts in journalism from Northeastern University.
Her debut novel reimagines The Breakfast Club with a dark twist—five students enter detention, but only four leave alive—exploring themes of secrets, identity, and the hidden complexities of teenage life.
McManus has written acclaimed sequels One of Us Is Next and One of Us Is Back, along with standalone thrillers including The Cousins (an Edgar Award nominee), Two Can Keep a Secret, and Nothing More to Tell. Her critically acclaimed work has been translated into more than 40 languages. One of Us Is Lying spent over five years on the New York Times bestseller list and was adapted into a television series on Peacock and Netflix.
One of Us Is Lying by Karen M. McManus is a young adult mystery thriller about five students who enter detention at Bayview High, but only four walk out alive. When Simon Kelleher, creator of a notorious gossip app called "About That," dies from an allergic reaction, the remaining four students—Bronwyn, Nate, Cooper, and Addy—become murder suspects after police discover Simon planned to expose their darkest secrets. The novel follows these four narrators as they work to prove their innocence while uncovering the shocking truth behind Simon's death.
One of Us Is Lying is perfect for young adult readers who enjoy mystery, suspense, and character-driven narratives with unexpected twists. The book appeals to fans of teen thrillers, readers interested in stories about social dynamics and identity, and anyone who appreciates multi-perspective storytelling. It's particularly suitable for readers aged 14 and up who can relate to themes like peer pressure, stereotypes, secrets, and the challenges of navigating high school social hierarchies while dealing with serious consequences.
One of Us Is Lying is worth reading for its compelling plot twists, relatable characters, and exploration of important teenage issues. Karen M. McManus's debut novel successfully combines mystery with meaningful themes about identity, friendship, and the dangers of assumptions and stereotypes. The book keeps readers engaged through multiple narrators, each revealing different perspectives and secrets, while addressing contemporary topics like sexuality, mental health, and social media's impact. The unpredictable ending and character development make it a standout in the young adult thriller genre.
Karen M. McManus is an American author who wrote One of Us Is Lying as her debut novel, establishing herself in the young adult mystery genre. The book showcases her talent for creating suspenseful narratives with authentic teenage voices and complex character dynamics. McManus crafted a story that challenges stereotypes by giving depth to characters who initially appear as high school archetypes—the brain, the criminal, the jock, and the princess. Her writing addresses relevant social issues while maintaining an engaging, fast-paced mystery that has resonated with both teen and adult readers.
Simon Kelleher dies during detention at Bayview High after suffering a fatal allergic reaction from drinking tap water contaminated with peanut oil. As the creator of "About That," a gossip app that exposed students' secrets, Simon begins a speech about the other four students before collapsing. Initially ruled an accident, his death becomes a murder investigation after a Tumblr post suggests foul play. The investigation ultimately reveals that Simon orchestrated his own suicide, planning to frame the other four students and ruin their lives as revenge for his social rejection and lack of popularity.
The Bayview Four refers to the four students who become murder suspects after Simon's death:
Each represents a high school stereotype but proves far more complex as their stories unfold. They were all in detention with Simon when he died, and each had a motive since Simon planned to expose secrets that could destroy their futures. Despite initial suspicion of each other, they form an unlikely friendship while working to prove their innocence.
About That is the gossip app created by Simon Kelleher that reveals students' darkest secrets at Bayview High. Simon describes himself as the "omniscient narrator" through this app, wielding power by exposing information nobody else knows. His final, unpublished post was set to reveal that Bronwyn cheated in chemistry, Cooper used steroids, Nate dealt drugs, and Addy cheated on her boyfriend—secrets that would impact their college prospects, legal status, and relationships. The app serves as both the catalyst for Simon's suicide plan and the weapon he used to manipulate others into helping him.
One of Us Is Lying reveals multiple devastating secrets about each character.
These secrets, intended for Simon's About That post, become public during the investigation, fundamentally changing each character's life and relationships.
One of Us Is Lying explores
Other significant themes include mental health (Simon's depression and suicide), LGBTQ+ identity (Cooper's coming out journey), social media's dangers, and the consequences of assumptions, as the investigation reveals how quickly people judge based on incomplete information.
One of Us Is Lying concludes with the revelation that Simon orchestrated his own suicide with Jake's help to frame the other four students. Addy discovers the truth when Janae, Simon's friend, confesses that Simon used his knowledge of Addy's infidelity to recruit Jake as an accomplice. Jake attacks Addy when she uncovers the plot, but Cooper saves her life. Jake is arrested, Janae accepts a plea bargain, and Nate is released from custody. Three months later, relationships heal: Cooper reconciles with his father, Addy lives with her sister, and Nate apologizes to Bronwyn, asking her to spend time together, which she accepts.
Jake Riordan, Addy's controlling boyfriend, becomes Simon's accomplice in orchestrating the suicide and framing scheme. Simon manipulated Jake by revealing Addy's infidelity, convincing him to help with the plan as revenge against his girlfriend. Jake planted the fake cell phones that led to detention, wrote anonymous Tumblr posts claiming to be the murderer, and pressured Janae to plant evidence against Addy. When Janae instead framed Nate and Addy discovered the truth, Jake attempted to kill Addy by chasing her into the woods and strangling her before Cooper intervened and saved her life.
One of Us Is Lying is appropriate for teenagers aged 14 and up, as it addresses relevant issues young adults face while maintaining an engaging mystery format. The book tackles important topics including coming out and LGBTQ+ identity, mental health and depression, toxic relationships, peer pressure, and the consequences of social media. While it contains mature themes like suicide, murder investigation, and relationship issues, Karen M. McManus handles these subjects thoughtfully, making them discussion-worthy rather than gratuitous. The diverse representation and authentic teenage voices help readers relate to characters navigating identity, family pressure, and social expectations in realistic ways.
Siente el libro a través de la voz del autor
Convierte el conocimiento en ideas atractivas y llenas de ejemplos
Captura ideas clave en un instante para un aprendizaje rápido
Disfruta el libro de una manera divertida y atractiva
One of Us Is Lying isn't just another teen mystery.
Simon was playing a sick game of Truth or Dare, except it was all Truth and no choice.
Desglosa las ideas clave de One of Us Is Lying en puntos fáciles de entender para comprender cómo los equipos innovadores crean, colaboran y crecen.
Destila One of Us Is Lying en pistas de memoria rápidas que resaltan los principios clave de franqueza, trabajo en equipo y resiliencia creativa.

Experimenta One of Us Is Lying a través de narraciones vívidas que convierten las lecciones de innovación en momentos que recordarás y aplicarás.
Pregunta lo que quieras, elige la voz y co-crea ideas que realmente resuenen contigo.

Creado por exalumnos de la Universidad de Columbia en San Francisco
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Creado por exalumnos de la Universidad de Columbia en San Francisco

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It begins like a twisted version of "The Breakfast Club": five students walk into detention at Bayview High, each fitting a distinct stereotype. Bronwyn is the Yale-bound perfectionist who never breaks rules. Cooper is the baseball star with major league scouts watching his every move. Addy is the picture-perfect girlfriend whose identity revolves around her popular boyfriend Jake. Nate is the school's notorious drug dealer, already on probation. And Simon-well, Simon runs the school's feared gossip app that exposes students' darkest secrets. All five insist they're innocent, claiming someone planted phones in their backpacks to get them into detention. But what starts as an ordinary punishment takes a deadly turn when Simon drinks from the water cup and collapses from a severe allergic reaction. Despite frantic efforts to find his EpiPen and perform CPR, Simon dies on the classroom floor. The investigation quickly reveals this was no accident. The EpiPens were deliberately removed from the nurse's office, and peanut oil-fatal to Simon's documented allergy-was found in his cup. Even more damning, police discover Simon had scheduled a gossip post for the next day exposing devastating secrets about all four detention survivors. Suddenly, everyone has a motive, and the "Bayview Four" become the prime suspects in what now looks like murder.