One by One is a chilling psychological thriller that explores how quickly trust can shatter when fear takes over. When a group of people gathers under seemingly ordinary circumstances, dark secrets and hidden tensions begin to surface. As shocking events unfold and people start disappearing one by one, paranoia spreads and no one feels safe anymore. Each character has something to hide, making it impossible to know who is telling the truth. With mounting suspense and constant twists, the story keeps readers questioning every motive and interaction. Freida McFadden masterfully builds tension through fast pacing and psychological mind games. Dark, gripping, and unpredictable, One by One is perfect for readers who love twist-heavy thrillers that keep them hooked until the final page.