Topkapi is a 1964 American Technicolor heist film produced by Filmways Pictures and distributed by United Artists.The film was produced and directed by the émigré American film director Jules Dassin. The film is based on Eric Ambler's novel The Light of Day (1962), adapted as a screenplay by Monja Danischewsky.The film stars Melina Mercouri, Peter Ustinov, Maximilian Schell, Robert Morley and Akim Tamiroff. The music score was by Manos Hadjidakis, the cinematography by Henri Alekan and the costume design by Theoni V. Aldredge. The film won an Academy Award in 1965, with Peter Ustinov taking home the trophy for Best Supporting Actor, his second such award in four years.