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Cover of One of Us Is Lying

Mystery · Young adult

One of Us Is Lying

by Karen M. McManus

3.7 out of 5, from 803 ratings from Hardcover readers

Five students go to detention, but only four leave alive when the school's gossip-app creator collapses and dies. Each of the four had a secret he was about to expose.

Facts last checked 2026-10-16

First published
2017
Pace
Fast
Length
Medium
Pages
368
Format
Book 1 of 3 in One of Us Is Lying
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Read this if you want a quick, twisty teen whodunit with a very bingeable pace.

Skip this if you prefer your mysteries more realistic and grown up, since the plot relies on contrivance.

The feel

Content warnings

  • Death
  • Bullying

Also reported by Hardcover readers:

  • Emotional abuse
  • Toxic relationship
  • Homophobia
  • Mental illness
  • Ableism
  • Injury/Injury detail
  • Addiction
  • Suicidal thoughts
  • Child abuse

Quick answers about One of Us Is Lying

What is One of Us Is Lying about?
Five students go to detention, but only four leave alive when the school's gossip-app creator collapses and dies. Each of the four had a secret he was about to expose.
Who should read One of Us Is Lying?
Read it if you want a quick, twisty teen whodunit with a very bingeable pace. Skip it if you prefer your mysteries more realistic and grown up, since the plot relies on contrivance.
How long and how fast is One of Us Is Lying?
It is a fast-paced, medium read of about 368 pages, first published in 2017.
Does One of Us Is Lying have content warnings?
Content we flag: Death, Bullying.
Can I borrow One of Us Is Lying for free?
Often, yes. Check Libby (OverDrive) to see whether your library lends One of Us Is Lying; the borrow button above searches it for you.
What should I read after One of Us Is Lying?
Readers who liked it often move on to A Good Girl's Guide to Murder, The Guest List.

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