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A sprawling estate was willed to a dancer who has vanished several years earlier. During their investigation at Heath Castle, Nancy, Bess and George realize that its crumbling walls contain a secret, but what is it? They search for clues in the neglected gardens of the vast estate, hoping to find a lead to the missing woman. Danger lurks in a castle tower and throughout the vine-tangled grounds as Nancy exposes a sinister plot to defraud the dancer of her inheritance. This book is the revised text. The plot of the original story (©1945) is similar with minor revisions.