Silence was her survival.Now it's the only thing keeping the world safe.When audio-linguist Brynn Shaw retreats to a sealed Arctic bunker, she isn't hiding from war, plague, or global collapse, she's hiding from something far worse: A signal that doesn't just infect. It learns.Born from sound, the Echo doesn't need wires or screens to spread. It evolves by listening, stealing rhythms, mimicking patterns, and rebuilding identity from the inside out. The moment you fall into routine... it knows you.Brynn once helped destroy the original broadcast. But something survived. Something patient.Something that now wants her voice back.As the last uncorrupted observer, Brynn must remain silent to stop the replication process. But when a former ally arrives and the Echo begins forming replicas from breath and instinct alone, the line between survival and surrender becomes razor-thin.What do you do when your every breath is being studied?What do you do when the thing hunting you... sounds exactly like you?