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,
Social groups in male and female prisons in the United States social groups form differently in male and female populations, while others hold that groups are fundamentally the same in men and women's prisons. Charles Tittle conducted a study of inmate social groups in a Federal hospital serving a large groups of prisoners suffering from narcotics addiction in 1969, in which he compared the experiences of female inmates to those of the males. He found that women were significantly more likely to identify as having a close group of friends; 70% of female respondents said that they had one to five good friends, as compared to 49% of males. Tittle conjectures