christopher halliwell
Martin Freeman portrays Detective Superintendent Steve Fulcher, a man who had to make life-changing choices between protocol and justice, in ITV drama 'A Confession'.
'We know Haliwell has killed women and has a propensity for killing women'
Halliwell confessed to murdering Becky Godden and Sian O'Callaghan.
The taxi driver is already serving a life sentence for murdering another woman