Topaz

Journey to a secret city, hidden away from satellites and preserved in time by an ancient artificial intelligence...Shipwrecked while vacationing aboard a Pacific cruise, Jacob Corgan and his son Brandon wash ashore on a mysterious and nameless island. As their struggle to find rescue takes them beyond the beach, they quickly discover they aren't alone and find themselves inadvertently drawn into a decades-long war of ideologies with a sentient computer at its heart