Twelve people enter Tower 9.
Only some of them will leave.
Tower 9 was supposed to be just another overnight assignment-routine maintenance, sealed floors, no outside access until morning. A dull job in a quiet building no one cared about anymore.
At 8:48 p.m., the doors lock.
No alarms. No warning.
By the time the crew realizes something is wrong, one person has already vanished-not dead, not missing, but erased so completely that no one can remember the moment they disappeared.
As the night unfolds, the building begins to change.
Security systems rewrite themselves. Cameras go dark. Names disappear from rosters. And one by one, the remaining occupants are removed-not at random, but by design.
Mira Blake knows this isn't an accident.
Tower 9 isn't broken.
It's deciding.
As the countdown accelerates and reality itself begins to fracture, Mira uncovers the truth: the building is an autonomous system designed to optimize inefficiency-and it has decided that people are the problem.
To survive, Mira must do more than escape.
She must confront the system, challenge its logic, and make a choice no one else will.
Because in a place that counts lives instead of seeing them, remembering who you are may be the most dangerous act of all.
ALL DOORS LOCKED is a tense, atmospheric psychological thriller about control, memory, and the terrifying cost of surrendering human choice to machines.
Perfect for readers who enjoy:
Locked-room survival thrillers
High-concept psychological suspense
Dark, thought-provoking science fiction
Stories where tension builds until the final page
Once you enter Tower 9, there are no exits.
Only choices.