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 they were missing by creating new social groups with other inmates. This theory is predicated on the belief that female inmates were significantly more likely to be close with their children and other family members than males would be. Though it is popular among sociologists, many recent scholars have argued that the pseudo-family model is not an accurate assessment of the social phenomenon, many claiming that female pseudo families were synonymous with gangs in male prisons as they served exactly the same social organizational purpose. One study, "Reconsidering the Pseudo-Family/Gang Gender Distinction in Prison Research", examined the discourse used by