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,
Deadlier Than the Male (song) "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". "Deadlier Than the Male" was a minor hit spending six weeks on the UK Singles Chart and peaking at #32. The single was released concurrently that December with the EP "Solo John/Solo Scott". The low sales of the single may have been hit by the label's strategy of releasing them both at once. The single is essentially a Scott Walker solo release as he sang lead vocals and wrote/co-wrote both tracks. Previously Scott had only contributed