By mistake, Nancy Drew receives a letter from England intended for the heiress, who is also named Nancy Drew. While searching for a missing young woman, Nancy, it becomes apparent that some ruthless and dangerous man is out to prevent her from finding both the heiress and himself. The evidence that Nancy unearths leads her to believe that the villain Edgar Nixon is going to marry the heiress and then steal her inheritance. During the investigation, Nancy learns that Nixon is involved in scams from which many innocent, gullible people have suffered. The exciting hunt for Nixon and the heiress leads to risky situations. The intriguing story of how a young detective will save the English heiress from a cunning and insidious schemer is full of mystery and tense suspense.