When a detention lineup leaves five students entering and only four walking out alive, a high-stakes mystery begins. One of Us Is Lying, adapted from Karen M. McManus’s bestselling young adult novel, translates the pressure cooker of Bayview High onto the screen. At the center of the story are four teenagers—Bronwyn, Addy, Nate, and Cooper—who all share a motive for murder because they all had secrets they wanted hidden.
Understanding the show requires looking past the surface labels of brain, beauty, criminal, and athlete. The series unpacks how these archetypes fracture under intense media scrutiny and police investigation. This guide examines the primary characters, the actors who brought them to life, and the deeper dynamics that drive the plot forward.
The Premise and the Players
Bayview High's infamous detention room brings together five distinct personalities: Simon Kelleher, the creator of the school's gossip app; Bronwyn Rojas, the academic perfectionist; Addy Prentiss, the homecoming princess; Nate Macauley, the school's probation-status drug dealer; and Cooper Clay, the golden-boy baseball pitcher. When Simon drinks poisoned water during detention, he dies, and the remaining four become prime suspects in a murder investigation.
The narrative unfolds through alternating perspectives, forcing the audience to weigh each character's alibi against their hidden vulnerabilities. Simon’s app targeted each of them with damaging truths, giving every single one of them a clear reason to want him silenced. Yet, as the investigation deepens, the core group discovers they are pawns in a much larger game.
Bronwyn Rojas and Marianly Tejada
Bronwyn Rojas represents the academic elite of Bayview High. Played by Marianly Tejada, she is a straight-A student with her future mapped out down to the Ivy League application. Bronwyn’s greatest fear isn't failing a test; it's disappointing her parents and losing the flawless identity she has constructed.
Tejada captures Bronwyn’s internal tension skillfully. Beneath the composed exterior lies a fierce loyalty to her younger sister and a willingness to break rules when the stakes demand it. Her relationship with Nate forms one of the emotional backbones of the series, pulling her out of her rigid comfort zone and into a world of genuine risk.
Addy Prentiss and Annalisa Cochrane
Addy Prentiss appears to have the high school experience dialed in. Portrayed by Annalisa Cochrane, Addy is popular, beautiful, and seemingly devoted to her star-athlete boyfriend, Jake. However, her entire social standing rests on a fragile foundation of pleasing everyone around her, particularly a partner who exercises subtle emotional control over her life.
Cochrane handles Addy's transformation with sharp nuance. The murder investigation acts as a catalyst for Addy's independence. As her old life falls apart, she cuts her hair, sheds her toxic relationships, and discovers an inner resilience that surprises both her peers and herself. Her arc moves from passive participation in high school hierarchy to active survival.
Nate Macauley and Cooper van Grootel
Nate Macauley lives on the margins of Bayview High. Played by Cooper van Grootel, Nate is dealing with an absent mother, an alcoholic father, and a criminal record that makes him the default suspect for local law enforcement. He sells prescription drugs to scrape by, adopting a cynical, detached demeanor to keep people at a distance.
Van Grootel infuses Nate with a weary vulnerability. Despite his tough facade, Nate is fiercely protective of the people he cares about, especially Bronwyn. His storyline explores the systemic traps that catch teenagers from unstable backgrounds and the difficulty of breaking free from labels assigned by a judgmental community.
Cooper Clay and Chibuikem Uche
Cooper Clay is the pride of Bayview’s athletic department. Portrayed by Chibuikem Uche, Cooper is a star pitcher on the verge of signing a major league baseball contract. To the town, he has the perfect girlfriend, the perfect arm, and a guaranteed future. The reality, however, involves immense pressure from his father and the secret burden of hiding his sexuality in a hyper-masculine sporting culture.
Uche portrays Cooper’s internal conflict with quiet intensity. His storyline addresses the heavy psychological toll of living a double life and the courage required to step into authenticity when everything you’ve worked for is on the line.
Secondary Characters and Ensemble Dynamics
Beyond the core four, the ensemble cast anchors the high school setting.
- Simon Kelleher (Mark McKenna): The instigator of the chaos. Simon's alienation drives him to expose everyone else's flaws, making him a complex figure rather than a simple villain.
- Janae Matthews (Maeve McGrath): Simon's sole confidante, whose sharp tongue and goth aesthetic hide a sharp intellect and a desperate desire for belonging.
- Maeve Rojas (Melissa Collazo): Bronwyn’s younger sister, a survivor of leukemia whose investigative skills often outpace the adults working on the case.
The chemistry between these actors elevates the high school drama from standard genre fare into a compelling study of teenage alienation, peer pressure, and collective trauma.
Behind the Adaptation
Translating a successful novel to the screen requires balancing fidelity to the source material with narrative momentum for television. Developed for television by Erica Saleh, the adaptation streamlined certain plot points while expanding character backstories to sustain multi-episode arcs across its two seasons on Peacock.
Casting played a pivotal role in making these characters believable. The producers sought actors who could bridge the gap between teenage vulnerability and mature emotional stakes, resulting in a lineup that brought McManus's literary creations to vivid life.
Frequently Asked Questions
Where can I watch One of Us Is Lying?
The series originally aired on Peacock in the United States. Both seasons are available for streaming on the platform for subscribers.
How many seasons of the show were produced?
The series ran for two seasons before concluding. The television adaptation wrapped up the primary storylines established in the original book and its sequel, One of Us Is Back.
Is the TV show different from the book?
Yes. While the core mystery and main characters remain the same, the television adaptation introduces new plot twists, changes specific character fates, and alters the identity of certain culprits to keep readers of the book guessing.
What genre does the series belong to?
The show combines elements of young adult drama, high school mystery, and psychological thriller.
