The Clue in the Crumbling Wall is the twenty-second volume in the Nancy Drew Mystery Stories series. It was first published in 1945 under the pseudonym Carolyn Keene. The actual author was ghostwriter Mildred Wirt Benson. Nancy and her friends work to discover an inheritance concealed in the walls of an old mansion, before it is discovered by unscrupulous men. This book has had at least three covers.
| Author: | Carolyn Keene |
| Genre: | Detective fiction, Fiction, Children's literature, Mystery |
| Year published: | 1945 |
| Number of editions: | 7 |