内容简介：
Catherine, a young widowed teacher from New York, comes to terms with her hurt, confusion, and anger after meeting a mysterious stranger while exploring an abandoned lighthouse and island in Michigan. They both seem to be searching for something. Is he real or the spirit of her late husband trying to help her in her dark hours? The stranger requests their friendship remain a secret. Her feelings become deeper than friendship, but she is never quite sure of his feelings. Summer ends. She returns home and meets Nick, who can fulfill her dreams. She marries Nick, never telling him about the stranger. When events bring the stranger back into her life, her marriage is threatened. As she struggles with unraveling mysteries, she becomes capable of a strong and mature love. The lighthouse secrets and the strangeras personal sacrifices and tragedies are revealed in an unanticipated ending.