Although we regard murder as a horrifying crime, most murders are unpremeditated acts committed in a brief moment of rage. But there are other murders that are more sinister motivated by greed, or to gratify perverted desires. This book takes a penetrating look behind the newspaper headlines. It considers the compulsions of the Yorkshire Ripper, the casual shootings by Bonnie and Clyde and the inexplicable sadism of the Moors Murders.