In attending the trial of Rosemary West, and using private papers and personal interviews, the author presents a study of the sexual obession that led to the measured killing of 12 women and girls by Fred West. In the wake of the horrific detail that has come to light, the book looks at how and why West was driven to serial killing of the most devious kind, resulting in a chain of murders that turned 25 Cromwell Street into a mass burial ground of sexually ravaged human remains, and how an evil psychopath was able to ensnare so many in a web of unseeing complicity.