Beth Godnight's mother has been missing twenty years. But suddenly she gets a sign of life from her. It's from Key Mariah. Beth wants Nick and Sylvie to find her mother. The clue leads them to a psychiatric hospital, where business people are in therapy. Nick and Sylvie decide to join a therapy group for couples. Soon they find Beth's mother who knows too much about the hospital, which uses the therapy in order to find out everything about the people's firms.