Nancy Drew races against time to unravel the clues in a dead man's letters. If she succeeds, Philip March and his little granddaughter can be saved from financial ruin. Following the obscure clues, Nancy undertakes a search for some unpublished musical manuscripts which she believes are hidden in the dark, cluttered attic of the rundown March mansion. But someone else wants them enough to put many frightening obstacles in Nancy's way.
Carolyn Keene has contributed to Nancy Drew 21: The Secret in the Old Attic as an author.Carolyn Keene is the author of the ever-popular Nancy Drew (All New) Girl Detective and Nancy Drew and the Clue Crew series.

Ray Johnson has contributed to Nancy Drew 21: The Secret in the Old Attic as an author.Ray Johnson is one of California's most admired wine educators and has judged at many professional wine competitions, including the West Coast, the California State Fair, and the San Francisco Chronicle. The editor of the game WineSmarts, Ray teaches at UC Berkeley Extension and the Santa Rosa Junior College in Sonoma Country, where he lives and makes wine.