What is the twentieth book in the Nancy Drew series?
The Vanishing Statue
Nancy Drew Confidential
Nightmare on Elm Street
The Murder at the Vicarage
Nancy Drew Confidential
Nancy Drew's Most Wanted
Nightmare on Elm Street
The Murder at the Vicarage
Nancy Drew Confidential
Stranger in a Strange Land
Nancy Drew's Murder on Main Street
Murder on the Orient Express
Nightmare on Elm Street
The Murder at the Vicarage
Nancy Drew's Diary
Stranger in a Strange Land
Nancy Drew and the Mystery of the Black Hole
Nancy Drew's Most Wanted
Nancy Drew Confidential
Nancy Drew's Murder on Main Street
The Murder at the Vicarage.
The Murder in the Rue Morgue
Nancy Drew's Murder on the Hudson River
The Curse of the Black Widow
Nancy Drew's Murder on the Hudson
The Murder at the Vicarage
Nancy Drew's Secret Files
Nancy Drew's Murder on the Riviera
Nancy Drew's Diary
Nancy Drew's Murder at the Museum
Nancy Drew's Most Wanted
Nancy Drew Confidential
Nancy Drew's Murder on Main Street
Nancy Drew's Murder on a Train
The Murder at the Vicarage.
The Curse of the Black Dahlia
Stranger in a Strange Land
Nancy Drew and the Mystery of the Black Cat
Nancy Drew's Murder on the Hudson River
The Curse of the Black Lagoon
The Curse of the Black Hole
Mrs. Drew's Diary
The Curse of the Werewolf
Nancy Drew's Diary
The Curse of the Black Cat
Nancy Drew's Murder on the Hudson
Nancy Drew's Eye for an Eye
The Murder at the Vicarage
Nancy Drew's Secret Files
Nancy Drew's Murder on the Riviera
Nancy Drew Meets Her Neighbors
The Curse of the Black Widower
Nancy Drew's Murder on Main Street
Nancy Drew Confidential: A Mystery
Nancy Drew Confidential
Nancy Drew's Last Case
Nancy Drew's Detection Files
The Murder at the Vicarage.
Nancy Drew's Most Wanted
The Curse of the Black Widow
The Curse of the Black Spot
Nancy Drew's Diary
Mrs. Drew's Diary
Nightmare on Elm Street, Volume 1
Nightmare on Elm Street, Part 2
Nightmare on Elm Street, Part II
Nightmare on Elm Street, Volume One
The Murder at the Vicarage
Nancy Drew's Deadly Detection
Nancy Drew Meets Her Neighbors.
Nancy Drew 20
Nightmare on Elm Street, Volume 20
Nightmare on Elm Street, Part 1
Nancy Drew's Murder on a Train
The Curse of the Black Pearl
Nightmare on Elm Street, Volume 2
Nancy Drew's Murder on Main Street
Nancy Drew's Deadly Friend
The Curse of the Black Dahlia
The Curse of the Black Lagoon
Mrs. Drew Goes to Washington
The Curse of the Black Ladder
Nancy Drew Confidential: A Mystery
All the King's Men
The Curse of the Black Hole
All the King's Horses
Nancy Drew's Last Case Files
Nightmare on Elm Street, Part One
Nightmare on Elm Street, Part I
Nancy Drew's Diary
Nightmare on Elm Street, Volume Two
Mrs. Drew's Diary
The Curse of the Werewolf
Nancy Drew's Deadly Accusations
Nancy Drew's Secret Files
The Murder at the Vicarage
Nancy Drew 20
Nightmare on Elm Street.
The Curse of the Black Cat
Nancy Drew Confidential
Nancy Drew Meets Her Neighbor
Snoopy's Revenge
Nightmare on Elm Street, Volume 1
Secret of the Black Lagoon
Nightmare on Elm Street, Part II
Nancy Drew Meets Her Neighbors!
Nightmare on Elm Street, Volume One
Nightmare in Black and White
The Curse of the Black Widower
Nancy Drew's Casebook
Nightmare on Elm Street, Part 2
Nightmare on Elm Street, Volume 20
Nancy Drew's Murder on Main Street
Murder on the Orient Express.
Missing Persons, Missing Persons II
Mrs. Drew's Casebook
Nightmare on Elm Street, Part 1
For the Love of Nancy Drew
Mrs. Drew's Murder Case
Nancy Drew's Detection Files
Mrs. Drew's Murders
The Curse of the Pink Panther
Mrs. Drew's Murder Cases
All the King's Horses are Gone
Nancy Drew Confidential, Volume 20
Nightmare on Elm Street, Volume 2
The Curse of the Black Widowers
Nancy Drew's Murder on 34th Street
Midnight Sun
Nancy Drew's Last Case
Nancy Drew's Deadly Assassination
The Deadly Assassination of Nancy Drew
Nancy Drew Confidential: A Mystery
Nancy Drew's Diary
The Curse of the Black Lad
Nancy Drew 20
Nightmare on Elm Street, Part I
Nightmare on Elm Street, Volume Two
Nightmare on Elm Street, Part One
The Murder at the Vicarage
Nancy Drew's Detection of Death
Nightmare on Elm Street.
Mrs. Drew's Secret Diary
Mrs. Drew's Diary
Nancy Drew's Deadly Accused
The Missing Link
Nancy Drew's Deadly Sins
Nightmare in a Small Town
Nancy Drew's Ghost Story
Missing Persons, Missing Persons 2
Nancy Drew's Murder on Main Street
Nightmare in Black and White
Mrs. Drew Goes to Town
The Curse of the Black Pearl
Nancy Drew Meets Her Neighbors...
Secret of the Black Lagoon
Secret of the Black Widow's Tomb
Mrs. Drew's Casebook
For the Love of Nancy Drew
Mrs. Drew's Murder Case
Midnight Sun
The Curse of the Black Ladder
Mrs. Drew Goes to Jail
The Murder at the Vicarage.
All the King's Horses is Dead
Nightmare on Elm Street, Volume 1
Mrs. Drew's Murders
Mrs. Drew's Murder Cases
Nancy Drew's Last Case
Nancy Drew 20
Nightmare on Elm Street, Part II
Nightmare on Elm Street, Volume 20
Nightmare on Elm Street, Volume One
Nancy Drew Confidential, Volume 20
Stranger in Paradise
Nancy Drew Confidential.
Nancy Drew's Deadly Detectors
Nightmare on Elm Street, Part 2
Secret of the Sniper's Nest
Nightmare on Elm Street, Part 1
Secret of the Sniper's Tail
The Murder at the Vicarage
Snoopy Come Home
Nancy Drew's Last Case Files
Missing Persons, Missing Persons II
Nancy Drew's Black Box
Mrs. Drew's Secret Diary
Secrets of a Murderous Mind
The Murder on the Orient Express
Nightmare on Elm Street.
The Missing Link
Nancy Drew's Deadly Friend List
Mrs. Drew Goes to College
Nancy Drew Confidential: A Mystery
Nancy Drew's Hidden Agenda
Nancy Drew's Diary
Midnight Sun
The Murder in the Rue Morgue
Missing Persons, Missing Persons
All the King's Men and Other Stories
Mrs. Drew's Casebook