In the quiet town of Grey Hollow, silence hides more than peace. Years after a mysterious construction accident claimed her husband's life, a mother and her young son discover a hidden box of cassette tapes inside their wall. The recordings contain the father's final warnings about a secret listening system buried beneath the town. As they begin to uncover the truth, they realize Grey Hollow may have been monitored for decades, every conversation captured by an unseen archive.
With the help of a determined investigator, they follow a trail of coded signals, hidden wires, and dangerous secrets that suggest the system is far larger than anyone imagined. But the deeper they listen, the clearer it becomes that someone is still protecting the archive.
