内容简介：
The killer's modus operandi was the same in each instance: strangulation, always with a guitar string pulled tight from behind. And there is one other similarity that Inspector Wilkins can't help noticing: each and every victim is a psychotherapist. Donald Dorricks is on a mission. Nine psychotherapists to go and his crusade is over. Yet even after confessing to the killings, he still protests his innocence.