Though we may like to believe that murderers are pathological misfits and hardened criminals, the vast majority of murders are committed by people who, until the day they kill, would seem to be perfectly normal. The Murderer Next Door is a riveting look into the dark underworld of the human psyche, an exploration of when and why we kill and what might push any one of us over the edge. A leader in the innovative field of evolutionary psychology, David Buss conducted an unprecedented set of studies investigating the underlying motives and circumstances of murders, from the bizarre outlier cases of serial killers to those of the friendly next-door neighbor who one day kills his wife.