This is the first book on rape to present an objective Darwinian view of a human behavior that is universally and rightly condemned as criminal. That rape is a violent, sexual, reproductive act reflects the all too human evolved capacity to contingently express tremendously selfish and loathsome as well as kind and caring behaviors. The observation that local cultural influences and personal developmental histories will influence the probability of an individual "choosing" any behavior (including callous criminal behaviors) in response to short and long term personal histories, evaluations of present circumstances, and expectations concerning how present behavior will impact their future prospects compared to alternative behaviors exhibited in the present, is central to modern evolutionary psychology. All behaviors are understood by biologists as necessarily being joint products of gene-environment interactions.
Understanding that rape is fundamentally "sexual" (that is, for a biologist, ultimately, albeit perhaps unconsciously, about gene propagation) helps to illuminate the circumstances under which virtually any man's probability of being sexually coercive increases. All creatures choose behaviors that, under current their social and environmental conditions, have expected fitness that exceed expected fitness costs as estimated from the perspective of the ancestral environment in which that animal's nervous system (i.e., it mind) evolved. This knowledge provides real insights into (1) the functioning of our own psyches (potentially enabling more personal self-control), and (2) how to tune laws, societal norms, and personal behaviors of both sexes in ways that are maximally effective in preventing and punishing rape, as well as helping its victims.
The largely bimodal reviews of this book here at Amazon should alert one that ideological forces are at work in many evaluations of this book, as well as a lack of understanding of the evolutionary perspective. It is not easy to understand the implications of evolutionary theory for human behavior, nor is it always pleasant. This book will help you understand it if you approach it intellectually, with a critical mind, putting your ideology to the side in your evaluation (which does not mean, of course, that you have to abandon your morals in actual practice).
By the way, do advocates of the traditional violence hypothesis of rape think that violence is not natural and not ultimately, often indirectly, about reproduction? Study nature honestly and you will change your mind about that. Gratuitous violence in nature is rare. All behavior, even highly PC and endearing forms such as play, have compelling Darwinian rationales.
Note that there is no reason to expect that natural selection will design a mind that reliably and consciously understands what it is ultimately up to, what the biological "end game" is about - gene propagation. It does not matter if you are talking about children at play or rapists raping. Ask yourself, if rape is not about sexaul reproduction, why does it typically involve an erection? Then ask, are men typically thinking primarily or at all about having babies when they are sexaully aroused. No, they are just sexually aroused, a state that clearly can be combined with many other emotional states. But it does not matter from the point of view of natural selection what a creature thinks, only that they act in a way which, in the ancestral environment, would have, on average, increased the individual's lifetime reproductive success.
Humans have the unique ability to desire the above-mentioned understanding. To obtain such knowledge it is necessary to check one's subjective personal experiences, biases, and imagination by observing human nature in others and in oneself under an objectifying influence, such as modern science. This book is a major step, not necessarily the final one with respect to rape, in this direction.