Original Australian Daybill Poster Behind The Door
Behind the Door or Beyond The Door as it was known in the US (Italian: Chi sei?, lit. "Who are you?") is a 1974 Italian-American horror film co-directed by Ovidio G. Assonitis (credited as Oliver Hellman) and Robert Barrett. The film stars Juliet Mills and Richard Johnson, and was released in the UK in a re-edited format as Devil Within Her. The interior shots were filmed on set in Italy at the Incir De Paolis Studios in Rome, while all exteriors were shot on location in San Francisco. Film Ventures International acquired the film for distribution in the United States for $100,000. The score was composed by Franco Micalizzi. The score is unusual for a horror film and at times seems to be referencing funk and disco music that may have been popular at the time. Behind the Door earned an estimated $15 million at the U.S box office.