One of Us Is Lying is an American teen drama mystery television series. The series is based on the 2017 novel of the same name by Karen M. McManus. It follows five high school students who enter detention, where one of them dies under suspicious circumstances and an investigation ensues. In January 2023, the series was canceled after two seasons.
At Bayview High, five students are given detention after Simon, Addy, Cooper, Bronwyn, Nate, and Bronwyn are killed. An anonymous user reveals the group's secrets on About That, and they try to work together to find the killer. They determine Addy's ex-boyfriend, Jake, killed Simon, but they accidentally shoot him.