The line that separates those who kill from those who only think about it, and from those who injure themselves, is often thinner than we imagine. Convicted murderers serving life-sentences in England are among the subjects of this in-depth psychological study of what makes people kill.

The line that separates those who kill from those who only think about it, and from those who injure themselves, is often thinner than we imagine. Convicted murderers serving life-sentences in England are among the subjects of this in-depth psychological study of what makes people kill.