Some towns don't keep secrets. They record them. When Eva Hart returns to the fogbound town of Grayridge, silence feels engineered and memory refuses to stay still. Strange signals from the Northwatch Observatory awaken old tapes, sealed files, and a vanished experiment known as Project ECHO. As Eva, Sky, and Alex follow the signal deeper-through abandoned observatories, distorted carnivals, and restricted zones-they discover that sound doesn't just preserve the past. It listens. It responds. And it rewrites the rules of time, identity, and trust. GRAYRIDGE: NEW FREQUENCY is a YA sci-fi mystery thriller about growing up under observation, where the most dangerous thing isn't what you hear-but what hears you. Grayridge is only the beginning.
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