When seventeen-year-old Mia Jensen arrives at school expecting a typical Thursday, the last thing she anticipates is a full lockdown. Sirens blare, teachers panic, and the school descends into chaos. But when the emergency persists and no one comes to explain, Mia and a small group of students realize something darker is at play.
As the night drags on, strange things begin to happen-hallway lights flicker, notes appear, and doors lock and unlock at random. Then, one student goes missing. Another is found unconscious. Mia, a puzzle-solving prodigy, begins to suspect that the lockdown is a cover for something much more sinister.
Using hidden clues and ciphers, she unravels a trail that leads to a forgotten scandal, a security guard with a dangerous past, and a fellow student who knows more than they're admitting. When the truth explodes, Mia is left to navigate betrayal, trauma, and a final game that could cost her everything.
Locked In is a high-stakes psychological mystery filled with plot twists, heart-pounding suspense, and a resilient heroine who refuses to be silenced.