The team soon realise someone is killing girls with Down Syndrome across manchester and while negotiating different cases they attempt to solve the case as more girls come into danger, the prime suspect is killed while fleeing arrest, but Dinah and Viv separately conclude that Viv's husband was also involved, Viv burns the evidence and plans to kill rather than arrest him, but he is killed by Cathy whilst she and Dinah are holding him at Viv's home, with Viv they cover up their involvement before reporting the killing
