On the surface Susan seems to have a normal, loving family, but there are secrets in her past that she cannot share with anyone. Because of this she is considered by those who know her to be an aloof and cold woman. One day her home is burgled and amongst the debris Susan discovers the worn photograph of a young boy. She becomes obsessed with tracing this child, now presumably a middle-aged man. But instead of discussing it with her family, she lies to both her husband and her son, and neglects to consider the impact her actions will have on them.

When she finally meets the man, she...