Levi Bellfield was found guilty on 25 February 2008 of the murders of Marsha McDonnell and Amélie Delagrange and the attempted murder of Kate Sheedy and sentenced to life imprisonment. Three years later he was found guilty for the murder of Milly Dowler. Chartered forensic psychologist Dr Caoimhe McAnena interviewed Bellfield just after he’d confessed to the murder of Milly Dowler. Having also worked with infamous killers such as Trevor Hardy, Ian Huntley and Mark Bridger she provides a unique insight into what it takes to make a killer.