Greybridge is a city built on quiet streets, forgotten bridges, and the kind of shadows that remain long after the lights go out. By day, its river moves with slow indifference, reflecting rooftops and clouds. But at night-when the wind shifts and the silence becomes too still-the city reveals the traces of what it has buried. Echoes. Reflections. Lives that ended, memories that refused to disappear, and truths that reshape themselves every time someone tries to forget them.Lena Corwell has spent years avoiding the past. As a conservator of old photographs and historical documents, she is skilled at restoring the stories of others while carefully avoiding her own. She lives quietly in a small apartment above the river, keeping to routines that keep her mind still. But everything changes the night she hears a knock from the wrong side of a locked door-one that should not exist, one connected to a part of the building that was never built.The knock awakens something. A ripple through the city. A memory through her mind. A fracture through reality.Soon after, her younger sister Emma-missing since childhood-returns without warning. Not harmed. Not confused. Simply changed. Emma carries fragments of a place beneath the real Greybridge: the Echo-City, an impossible layer of shifting streets, broken mirrors, and unfinished memories. A city that remembers what people forget. And it remembers Lena.As strange lights flicker across the river and shadows move where they should not, Lena begins to see a silent figure in reflective surfaces-a faceless presence bound to the border between worlds. The Watcher. He has followed her whole life, unable to intervene, unable to cross into her world, but unable to leave her. He is not human. He is not a ghost. He is simply the witness to a truth Lena has forgotten.With the help of Adrian Veil, her rational but reluctant neighbor, and Dr. Maeve Hawthorne, a neuroscientist who studies perceptual fractures, Lena unravels the layers of Greybridge. The city is not broken. It is awakening. And it wants her to remember something it has protected for decades.When an echo wearing her father's voice and shape emerges from beneath the floor-steady, coherent, impossibly alive-Lena is forced to confront the night she lost him. A night erased from her memory. A night the Watcher hid to protect her. A night that shaped the city itself.The truth is not gentle. It is not quiet. It rises like the river that nearly took her life. And when Lena finally sees what happened-when she remembers what she was never meant to forget-the bond between her and the Watcher shifts in a way that changes both of them forever.As Greybridge stabilizes, as the shadows retreat, as the Echo-City rearranges itself around the truth, Lena must decide what to carry forward. Which memories to keep. Which burdens to release. And which version of herself the city will allow her to become.THE ECHOES OF GREYBRIDGE is a psychological supernatural thriller about memory, trauma, identity, and the quiet places that hold the parts of us we are not ready to face. A story of two sisters, a silent guardian trapped in reflections, and a city that remembers every secret its inhabitants try to bury. Atmospheric, emotional, intimate, and haunting, it explores what happens when the past refuses to stay hidden-and when the truth finally finds its way home.