'Excellent . But she is finding it hard to maintain.
Increasingly preoccupied by her son Tom's disappearance, Ruth is shaken when a new patient arrives at the unit - a young man who looks shockingly like him.
When Jeremy Harding was a child, his mother Maureen told him he was adopted. It was only later, as Harding set out to look for traces of his birth mother, that he began to understand who his adoptive mother really was - and the benign make-believe world she'd built for herself and her little boy.
