The Echo Vault is a genre-defying supernatural thriller that weaves music, memory, and mystery into a breathtaking journey across the edge of the known world-and beyond.When four strangers each intercept a fragment of a mysterious harmonic signal, they're drawn into a shared resonance that defies explanation. Their path leads them to a hidden island and into a sentient Vault-an ancient harmonic intelligence that tests them through sound, memory, and emotion.Inara, the archivist haunted by a past betrayal. Kael, the grief-stricken cartographer seeking redemption. Luma, the disgraced AI scientist who once silenced her creation. Rowen, the synesthetic prodigy who sees sound and feels truth.Together, they must pass the Vault's trials-not with strength, but with harmony. What they uncover is not treasure, but the origin of all resonance: the Heart of Sound, a force that reflects humanity's deepest truths.Powerful, lyrical, and immersive, The Echo Vault is a meditation on vulnerability, unity, and the power of listening-not just to the world, but to ourselves.