Abuse of Trust (1) - S2.E7

A woman is found murdered in her flat in almost identical circumstances to one six months earlier. The victims have one thing in common – they are both members of the same Internet dating site. Kelly goes undercover and builds up a relationship online with prime suspect Dark Angel, but her tactics come close to entrapment. Liam's colourful love life threatens to compromise the operation when a spurned girlfriend starts to stalk him.