In March 2002, thirteen-year-old Milly Dowler was abducted as she made her way home from school, sparking one of the biggest murder investigations in the history of Surrey Police. In the subsequent two years, Marsha McDonnell and Amélie Delagrange were brutally murdered while walking home at night. The man responsible for these murders - as well as other violence against women and girls - was Levi Bellfield.

When the body of Amélie Delagrange was discovered on Twickenham Green in 2004, criminal behavioural analyst Laura Richards - at the time head of Scotland Yard's Homicide Prevention Unit - was called upon to support the investigation and find other linked offences to inform the profile of the killer. After much painstaking work, patterns began to emerge and the hunt was on for a perpetrator who had struck more than once, and who was targeting lone, blonde females.

In this gripping book, Laura describes the investigation from her unique position on the inside. She offers a searing examination of the criminal mind as she explores in detail the life and behaviour of Bellfield, seeking to understand why he carried out these terrible crimes - and how he had got away with it for so long.