The author notes that developing an understanding of a rapist is central to the formulation of a science of rape. By accomplishing the latter, better preventive measures can be devised so as to significantly limit the incidence of rape in our society. This chapter, which seeks to do so, is based on interviews with nine rapists who all lived in Riverlea, a "coloured" township on the south-western border of Johannesburg. Five of the rapists had been convicted of rape. Four only admitted to rape in the course of the interview.