Nurse Florence Shaw is baffled when a quiet patient dies in an apparent suicide pact with her husband. Can she uncover the truth behind this mysterious woman?

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?