Professor David Wilson returns to investigate more of Britain's most notorious serial killers. Killers Behind Bars series 2 starts on Thursday 14 March at 9pm on Channel 5.
Professor David Wilson investigates convicted child killer Robert Black. In 2011, Black was sentenced to life in prison for the murder of a nine-year-old girl. Through profiling and interviews with detectives involved in the cases, Professor Wilson builds up a theory that Robert Black may have killed more children, and specifically links him to two of the UK's longest-running unsolved cases.