When Nancy is asked to find a professional dancer who disappeared
several years before, the young detective becomes involved in a mystery
reaching far beyond a missing-person's case. During Nancy's
investigation at Heath Castle, she and her friends Bess and George
realize that its crumbling walls contain a secret, but what is it? And
who are their enemies that try to foil their every attempt to unravel
the intricate puzzle? Danger lurks in a castle tower and throughout the
vine-tangled grounds of the estate. The girls' gripping adventures
culminate in a dramatic climax when Nancy exposes a sinister plot to
defraud the dancer of her inheritance.