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 women's prisons, incarcerated mothers tend to receive fewer visits from family than incarcerated fathers typically do as they are often living in a facility which is hundreds of miles from where their children are living. Incarcerated women tend to have significantly higher rates of mental health problems than male prisoners; 73% of women in state prisons suffer from some mental health issue versus 55% of men. The societies and cultures within prisons frequently have been of interest to sociologists; one early study, published in 1949, noted the significance of prison community and the structure of the inmates' society. The author,