Crimewatch - 20/12/2007

Fiona Bruce presents more reconstructions of major crimes, and appeals for the public's help to solve them. The net tightens on the killer of Heather Barnett, the mum of two found mutilated in her own home. Can DNA trap the rapist who targeted young girls back in the early 90s? And in Fiona Bruce's last show, she looks back over the high-profile cases that struck a chord with her.