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,
The Day Lasts More Than a Hundred Years when she attempts to rescue him from captivity. The Day Lasts More Than a Hundred Years The Day Lasts More Than a Hundred Years (, "And longer than a century lasts a day"), originally published in Russian in the "Novy Mir" literary magazine in 1980, is a novel written by the Kyrgyz author Chinghiz Aitmatov. In an introduction written in 1990, during "perestroika", the author wrote that the original title was "The Hoop" ("Обруч"), which was rejected by censors. The title "The Day Lasts More Than a Hundred Years", taken from the poem "Unique Days" ("единственные дни") by Boris Pasternak,