(From the publisher):
From the publisher
Nancy, Bess, and George travel to France to search for a flight of 99 steps to solve the mystery of a friend's strange dream. During her search, she must contend with the sinister Monsieur Neuf and help her father uncover who is frightening a wealthy financier into selling large amounts of securities.
Original title: The Mystery of the 99 Steps
Genre: Fiction→ Children & Young Adult→ Mystery