Is it hard to read?
No, the prose is direct, conversational and driven by dialogue, and the mystery moves briskly. The four suspects take turns narrating, so the perspective shifts between them.

Fiction · Novel · Mystery & Thriller · Romance
About 8 h 15 min · at 30 minutes a day, about 17 days
Estimated from the page count of this edition. Dense books can take longer than the estimate.
At Bayview High in contemporary Southern California, four students become murder suspects when Simon, creator of the school's gossip app, dies during detention. Bronwyn is aiming for Yale, Addy is a homecoming princess, Cooper is a star baseball pitcher, and Nate is on probation for dealing drugs. Simon planned to publish secrets about all four the following day, leaving each with an apparent motive and a private life under scrutiny.
The four suspects take turns narrating this brisk YA mystery, with romance and family pressures woven through the investigation. The opening relies on familiar high-school stereotypes, but their accounts gradually complicate those labels. School drama matters as much as detective work, and abuse and suicide are central subjects.
Collected’s assessment, not reader ratings. Complexity runs from 1 (least demanding) to 5 (most demanding).
No, the prose is direct, conversational and driven by dialogue, and the mystery moves briskly. The four suspects take turns narrating, so the perspective shifts between them.
School drama matters as much as detective work. The murder investigation shares space with romance, family pressures and private secrets, while the suspects gradually become more complicated than their initial high-school stereotypes suggest.
Abuse and suicide are central subjects, and violence is strong, with a student's death during detention driving the murder investigation. Sexual content, language and substance use are mild.
No, this is the first entry in the One of Us Is Lying series. It introduces the four Bayview High students who become suspects after Simon dies during detention.
416 pages in the Delacorte Press 2023 paperback edition.
Delacorte Press · 2023 · paperback. ISBN 9781524714758.
About 8 hours 15 minutes at 50 pages an hour, based on the 416-page Delacorte Press edition. Dense books can take longer.
Karen M. McManus writes young adult thrillers in which murder investigations unfold inside tightly connected schools, towns, and families. Her prose is direct and conversational, with dialogue carrying much of the tension and shifts in viewpoint controlling what readers know. She repeatedly treats secrets as social forces. Gossip apps, anonymous games, public accusations, and guarded family stories turn private choices into collective suspicion. In One of Us Is Lying, four students narrate the aftermath of a classmate’s death, allowing distrust and shifting alliances to develop alongside the police investigation. McManus also places mysteries within communities already shaped by old scandals. Two Can Keep a Secret brings family history, a vanished girl, and threats against a homecoming celebration into the seemingly orderly town of Echo Ridge. The Cousins moves a similar method to an island resort, alternating among estranged relatives and glimpses of an earlier generation. Her plots advance through controlled disclosures and young people forced to cooperate before they can decide whom to trust.