| Author | Carolyn Keene |
|---|---|
| Country | United States |
| Language | English |
| Series | Nancy Drew Mystery Stories |
| Genre | Juvenile literature |
| Published | 1967 Grosset & Dunlap |
| Media type | Print (Hardback & Paperback) |
| ISBN | |
| OCLC | 27866939 |
| Preceded by | The Mystery of the 99 Steps |
| Followed by | The Spider Sapphire Mystery |
The Clue in the Crossword Cipher is the forty-fourth volume in the Nancy Drew Mystery Stories series. It was first published in 1967 under the pseudonym Carolyn Keene. The actual author was ghostwriter Harriet Stratemeyer Adams.
A woman named Carla Ponce invites Nancy, Bess, and George to Peru to help decipher the mystery in the crossword cipher—a wooden plaque that promises to lead them to a wonderful treasure. Nancy must find the treasure before a gang of thieves led by El Gato (The Cat) reach it first.