Richard and Christine Clay have been married for decades. Their relationship has stood the test of time despite Christine appearing passive while her husband is unmistakably dominant - at times bullying and controlling.

Nurse Florence Shaw has seen Christine at the surgery a number of times with minor complaints over the past year, none of which has led to a serious diagnosis. But when Florence hears that the couple appear to have entered into a suicide pact, she is shocked, though not surprised that Richard has survived. Was Christine's death really a suicide, or was there more to this quiet woman than meets the eye?