A pretty interesting and thorough look at the science of cannibalism, from the wide world of evolutionary beneficial cannibalism across the animal kingdom, to survivor cannibalism in humans and other animals, to concepts like medicinal cannibalism that don't often get thought of. It's really interesting to look at the natural scientific history and learn about where the recoiling taboo that is now attached to cannibalism comes from. It appears it might be more natural and less terrifying than we always thought. Overall, well written and again pretty thorough-- though I think by the end of the book I was kind of exhausted on the topic (not to mention Schutt purposely avoided talking about the gory and sensationalized cannibalistic crimes of some modern day serial killers, and for respectable reasons, but I think that would have added an interesting layer to the story).