The film was shot in black-and-white and is designed to imitate the appearance of film noir from the 1940s, although it also includes material – such as sex scenes and swearing – that would have been prohibited by the Production Code. Its poster is a homage to the poster for the classic film "Casablanca" (1942, also a Warner Bros. film), as is the closing scene at an airport. The DVD release presents the film in the 1.33:1 aspect ratio which declined in use from about 1953, though the theatrical release, and other DVD Releases, used the slightly more modern but still unusual 1.66:1 ratio.