One of Us Is Lying

One of Us Is Lying is Karen M. McManus's 2017 YA mystery about a detention room that becomes a crime scene. Penguin Random House lists the Delacorte Press paperback with ISBN 9781524714758, and its adaptation notice identifies Peacock's television version as a screen adaptation of McManus's novel.

The hook is clean: five Bayview High students walk into detention, and only four walk out alive. The dead student ran a gossip app, which means each survivor has something to hide and a reason to fear the next reveal.

Read it before the Peacock series if you want the book's tighter suspect structure. The show can spread the pressure across episodes, but the novel works because each narrator has to manage grief, panic, and self-protection on the page.

Bronwyn Rojas is the high-achieving student whose future depends on looking spotless.

Addy Prentiss starts from the role other people gave her, then has to decide what she actually wants.

Nate Macauley carries the most obvious trouble, which makes him easy to misread.

Cooper Clay has a public image to protect and a private life the investigation can expose.

Simon Kelleher is dead early, but his gossip app keeps shaping the room after he is gone.

No. 1 - Strong adaptation route. Peacock gives the book a clear screen path for YA mystery readers.

No. 2 - Multiple suspect voices. The rotating narration lets the mystery move through different kinds of pressure.

No. 3 - Useful YA shelf fit. It adds school mystery, thriller pacing, and current adaptation relevance to the catalog.

Read this if you are...

• Coming from Peacock and want the original Bayview mystery.
• Looking for a YA thriller that moves quickly.
• Interested in reputation, rumor, and school social pressure.
• Choosing a teen book-club pick with clear debate points.

Skip it if you are...

• Wanting adult procedural realism.
• Tired of high-school secret structures.
• Frustrated by cliffhanger chapter endings.
• Sensitive to death, bullying, outing, drug dealing, and family pressure.

• Track each narrator's fear. The book often tells you more through what a character protects than what they admit.
• Treat gossip as evidence and weapon. Simon's app keeps changing what the suspects can safely say.
• Notice how public identity works. Each suspect is trapped by the version of themselves other people believe.
• Compare after watching. The series has more room for side plots, while the book is built as a compact suspect puzzle.

• E. Lockhart - We Were Liars. For another YA thriller where family and memory distort the truth.
• Holly Jackson - A Good Girl's Guide to Murder. For a more investigation-driven YA mystery.
• Holly Jackson - Good Girl, Bad Blood. For a sequel-style YA crime lane.
• A. J. Finn - The Woman in the Window. For unreliable observation in an adult thriller.
• Gillian Flynn - Sharp Objects. For a darker adult version of secrets, identity, and suspicion.

1. Which narrator did you trust first, and why?
2. How does the gossip app change the meaning of privacy at Bayview?
3. Does the book make each suspect's motive feel plausible?
4. Which character changes most under pressure?
5. How does the rotating narration affect suspense?
6. What should the Peacock series preserve from the novel?
7. Is Simon more powerful before or after his death?
8. Does the ending satisfy the setup?