In the Footsteps of Killers: The Disappearance of Robert Duff

Emilia Fox, leading criminologist Professor David Wilson and former senior detective Dr Graham Hill investigate the case of north London father-of-two Robert Duff. The 37-year-old disappeared in January 2013 after failing to show up at his daughter's 18th birthday party. The trio follow a series of clues from within the local community that lead to a shocking revelation