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 Return of the Son of Monster Magnet the recording session, but it is unclear what, if anything, played by him was used for the released version. According to Beatles author and Zappa biographer Barry Miles, the unreleased Beatles experimental track "Carnival of Light" which was recorded in January 1967 resembles "The Return of The Son of Monster Magnet", although it is believed that "Carnival of Light" is more fragmented and abstract than Zappa's effort the previous year. The song begins with the following dialogue: Male voice: Suzy? Female voice: Yes? Male voice: Suzy Creamcheese? Female voice: Yes? Male voice: This is the voice of your conscience baby