Carolyn Keene is a pen name used by a variety of authors for the classic Nancy Drew Mystery series. The first author to use the pseudonym was Mildred Wirt Benson, who wrote 23 of the original 30 books. Other writers who have adapted the Carolyn Keene moniker include Leslie McFarlane, James Duncan Lawrence, Walter Karig, and Nancy Axelrod.
| SKU | Unavailable |
| ISBN 13 | 9780671730550 |
| ISBN 10 | 067173055X |
| Title | Mystery of the Masked Rider |
| Author | Carolyn Keene |
| Series | Nancy Drew |
| Condition | Unavailable |
| Binding Type | Paperback |
| Publisher | Aladdin Paperbacks |
| Year published | 1992-10-01 |
| Number of pages | 160 |
| Cover note | Book picture is for illustrative purposes only, actual binding, cover or edition may vary. |
| Note | Unavailable |