Nancy's Mysterious LetterCarolyn KeeneNancy Drew Mysteries, book 8

Characters in Nancy's Mysterious Letter

2 characters, main characters first.

Main characters

Nancy Drew
Also in The Secret of the Old Clock, The Hidden Staircase, The Bungalow Mystery, Together with the Hardy Boys, The Mystery at Lilac Inn, The Secret at Shadow Ranch, The Secret of Red Gate Farm, The Clue in the Diary, Nancy Drew, Girl Detective, The Sign of the Twisted Candles

Antagonists

The Man Running the Lonely Hearts Club