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.
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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.