 In the United States, Mario Bava's "Shock" (1977) was re-titled "Beyond the Door II" and branded as a sequel, though it has no relation to the 1974 film.A second sequel, "Beyond the Door III", was also released in 1989, though it too bears no relation to the previous two films.Jessica Barrett, a young English mother living in San Francisco, reveals to her music executive husband, Robert, that she is pregnant.