Nancy Drew The Mystery of the 99 Steps - Hardcover

The Mystery of the 99 Steps is the 43rd book in the Nancy Drew Mystery Stories series, published in 1965, where Nancy investigates a friend's dream, leading her to France to uncover a link between the dream and her father's case involving a wealthy financier being blackmailed, all connected by a mysterious set of 99 steps. The book, written under the pseudonym Carolyn Keene (actually ghostwritten by Harriet Stratemeyer Adams), involves danger in the Loire Valley as Nancy and her friends try to solve the mystery. No call outs