Deadlier Than the Male intrigue when he comes to visit. The title is a reference to the 1911 Rudyard Kipling poem "The Female of the Species," which includes the line, "The female of the species must be deadlier than the male", and also refers to Sapper's earlier Drummond book, "The Female of the Species". The working title of the film was "The Female of the Species". "Deadlier Than the Male", the song featured in the film`s opening credit sequence, was performed by the Walker Brothers. Filmed in Technicolor and Techniscope, portions of the film were shot in Lerici, La Spezia, Liguria, Italy. A sequel,
Female of the Species to his late father, who was reported to dislike his son's taste of music, "Female of the Species" is a funky, upbeat Latin-flavoured number with feel-good sounding vibes and vocals reminiscent of lounge singers such as Perry Como and Frank Sinatra combined with keyboardist Franny Griffiths' trademark sound effects and Scott's dark humoured lyrics. The song borrows to some extent, both thematically and in overall aesthetic, from The Walker Brothers' theme song for the 1967 film "Deadlier Than The Male". When the song was performed at later concerts, Scott usually walked into the audience to shake the front concert-goers by