In Nancy's Mysterious Letter by Carolyn Keene, by mistake, Nancy Drew receives a letter from England intended for an heiress, also named Nancy Drew. When Nancy undertakes a search for the missing young woman, it becomes obvious that a ruthless, dangerous man is determined to prevent her from finding the heiress or himself. Clues that Nancy unearths lead her to believe that the villainous Edgar Nixon plans to marry the heiress and steal her inheritance.
During her investigation, Nancy discovers that Nixon is engaged in a racket that involves many innocent, trusting people. The thrilling hunt for Nixon and the heiress takes Nancy in and out of many perilous situations. Recommended for ages 8 to 12.