Carolyn Keene has written 98 books.
Carolyn Keene's first book is Nancy Drew 44: The Clue in the Crossword Cipher (Nancy Drew Mysteries) published in 1711.
Carolyn Keene's latest book is Mystery at Magnolia Mansion (Nancy Drew Mysteries Book 97) published in 2013.
Analysing the books written by Carolyn Keene, we estimate that the reading level of books written by Carolyn Keene is Grade 8.
The easiest book in the series is Nancy Drew 10: Password to Larkspur Lane (Nancy Drew Mysteries) at 3rd and 4th grade reading level.
The hardest book in the series is The Swami's Ring (Nancy Drew Mysteries Book 61) at 12th and 13th grade reading level.