The mystery of the 99 steps /
Mystery of the ninety-nine steps
by Carolyn Keene.
- New York : Grosset & Dunlap, 1992, c1966.
- 176 p. : ill. ; 20 cm.
- Nancy Drew mystery stories ; 43 .
- Keene, Carolyn. Nancy Drew mystery stories ; 43. .
Despite warnings from a stranger, Nancy sets out for France to search for a flight of 99 steps which may help solve the mystery of a weird dream and a possible case of blackmail.