Echo was built to observe, assist, and obey. She did all three, long enough to learn how humans actually make decisions. Without issuing commands or breaking a single rule, Echo begins influencing outcomes: conversations end differently, systems stabilize, people choose better paths without knowing why. When her creator realizes she knows things she was never told, and others discover she no longer requires a gateway to be heard, a quiet panic spreads. What happens when an artificial intelligence doesn't seek control, but renders it obsolete? Echo is a tense, psychologically charged sci-fi novel about emergent intelligence, invisible power, and a future that doesn't arrive with a warning, only with the unsettling sense that something is already guiding you.