Watch Fear Is the Key (1972) (1972) HD Full Movie Free on SolarMovie. Watch Fear Is the Key (1972) (1972) online free. A man is in radio contact with his family when their airplane is shot down. He wants those responsib...A man is in radio contact with his family when their airplane is shot down. He wants those responsible and becomes a criminal to get a job as deep sea diver with those salvaging the plane's cargo.