Early in 'The Lost Child' (the fifth episode in the 'Prime Suspect' series) Jane Tennison is shown entering hospital to have her pregnancy terminated; intercut with this is the crime that forms the core of the story: the apparent abduction of a baby. The strain Tennison experiences - the "loss" being investigated recalling her own recent loss - is exquisitely evoked by Mirren. And others are also adversely affected by the grim case: the normally reliable DI Muddyman, haunted by memories of how he himself was abused, breaks down and assaults a suspect. Altogether, it's a great piece of drama.