Librería Samer Atenea
Kálamo Books
Librería Elías (Asturias)
Librería Kolima (Madrid)
Librería Proteo (Málaga)
Marcus Vale is running out of blood.Wounded and pursued through a freezing mountain storm by the Obsidian Vanguard, Marcus and three survivors-Dr. Elena Lockhart, signal specialist Rosalind Quinn, and young mountain guide Caleb Ward-race toward the abandoned Oakridge Annex. The brutalist school building is their only possible shelter.They believe they are escaping a kill team.They are actually entering something far worse.The moment the heavy doors of the Annex close behind them, the sounds of the outside world disappear. Radio signals vanish. Communications fail. The building seems to exist in a vacuum where ordinary physical laws no longer apply.Elena treats Marcus’s gunshot wound while Rosalind desperately searches for a signal, but the deeper they explore the school, the more impossible it becomes. The Annex is not merely abandoned. It is a sealed environment governed by an unseen system known as the Prefect.At the center of the mystery is Classroom 21.The survivors discover that the school has been connected to a strange temporal phenomenon dating back to 1999. People who enter can become trapped outside normal chronological time, preserved while the world beyond the building continues without them.Marcus, Elena, Rosalind, and Caleb are forced to confront the school’s rules, its hidden records, and the terrifying entity controlling the Annex. The building does not simply want to kill them. It wants to classify them, record them, and keep them inside a system where identity itself becomes a form of imprisonment.As Marcus fights his way through the school, Elena searches for a rational explanation, Rosalind attempts to understand the impossible communications field, and Caleb struggles with the memories and fears the Annex seems determined to exploit.The final confrontation centers on the Ledger-the record binding the survivors to the school’s system.Marcus destroys it.The Annex collapses.For the first time, the survivors believe they have won.But when the building releases them, they discover that they have not returned to the world they left behind.Twenty-five years have passed.The modern city around them is alive with technology, commuters, traffic, and a future they never experienced. Yet something is terribly wrong. The survivors can see the living world, but the living world cannot see them. Their bodies are partially untethered from reality. They can walk through people. Their reflections are missing. Their names no longer belong to any register.They escaped Classroom 21.But they did not return to reality.Now Marcus, Elena, Rosalind, and Caleb must find a way to anchor themselves back into the world before they become permanent ghosts-while confronting the possibility that breaking the school’s rules may have created a new problem far more dangerous than the one they escaped.Classroom 21 is a dark supernatural thriller combining military pursuit, psychological horror, time distortion, impossible architecture, and a fight for the most basic human right of all: the right to exist.