The Clue of the Dancing Puppet is the thirty-ninth volume in the Nancy Drew Mystery Stories series.
A mysterious dancing puppet is haunting the grounds of the old Van Pelt estate, home of the local acting troupe, The Footlighters. Nancy, Bess and George's investigation is a dangerous one, but a rewarding one in the end when an old family mystery is solved.
- The yellow spine picture cover format is introduced.
- This is the only book in the original series that lends a clue to how Nancy's mother died. As it would seem, Mrs. Drew apparently died of a "sudden illness" (most likely some kind of terminal illness) when Nancy was three.
- However, it's still not specified what she died from.