The Clue in the Crumbling Wall (Nancy Drew Series #22)

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 o…