Cannibalism, necrophilia, torture and sadism are the hallmarks of the world's most notorious serial killers. Multiple murderers such as Jeffrey Dahmer, Arthur Shawcross and Dennis Nilsen all turned their darkest fantasies into horrifying reality. Published to coincide with a Central Television programme, this book discusses new FBI techniques being employed in Britain in tracking down serial killers. Dealing with mainly British case histories, it explores what makes people kill and how detectives are developing special psychological skills to trap the rising number of serial killers around the world. Interviews with the killers themselves are included, and the secret world of the FBI "mindhunters" is probed.