Answer
Three of Campbell's novels have been adapted into films: - "The Poseidon Adventure" (1972) is based on "The Poseidon Adventure" (1969). - "The Towering Inferno" (1974) is based on "The Tower" (1974) and "The Glass Inferno" (1974) by Thomas N. Scortia and Frank M. Robinson. - "Escape from New York" (1981) is loosely based on "No Blade of Grass" (1970).