What is the tenth book in the Nancy Drew series?
Password to Larkspur Lane
The Hidden Staircase
The Hidden Staircase
The Secret of the Old Clock
Nancy Drew and the Hidden Staircase
The Mystery of the Blue Train
The Hidden Staircase
The Clue of the New Pin
Nancy Drew and the Hidden Staircase
The Hidden Staircase
The Secret of the Old Clock
The Mystery of the Blue Train
The Hidden Staircase
The Clue of the New Pin
Nancy Drew and the Hidden Staircase
The Secret of the Unicorn
The Secret of the Old Clock
Hidden Treasures of the Sierra Madre
The Hidden Staircase
The Clue of the New Pin
The Mystery of the Phantom Train
The Mystery of the Black Cat
The Mystery of the Phantom Flame
The Mystery of the Blue Train
Hidden Treasures of the Sierra Madres
Nancy Drew and the Hidden Staircase
The Mystery of the Phantom Ranch
The Hidden Staircase
Hidden Treasures of the Sierra Madre
The Secret of Hidden Lake
The Clue of the New Pin
Dead Man's Curve
The Scarlet Slipper Mystery
The Secret of the Unicorn
The Secret of the Old Clock
Hidden Staircase
Hidden Treasures of the Sierra Madres
Nancy Drew and the Hidden Staircase Mystery
The Scarlet Slipper
Nancy Drew and the Hidden Staircase
The Hidden Staircase
The Clue of the New Pinhead
Hidden Treasures of the Sierra Madre
The Mystery of the Blue Train
The Mystery of the Black Cat
The Mystery of the Phantom Train
The Clue of the Hidden Dragon
The Mystery of the Phantom Flame
The Clue of the New Pin
The Secret of the Unicorn Cave
The Scarlet Slipper Mystery
The Secret of Hidden Lake
Hidden Staircase
Dangerous Curves
Dead Man's Curve
The Secret of the Old Clock
The Secret of the Unicorn
The Clue of the Black Widow
The Mystery of the Phantom Ranch
The Hidden Staircase
Hidden Treasures of the Sierra Madres
The Scarlet Slipper
Hidden Treasures of the Sierra Madre
The Clue of the New Pinhead
Nancy Drew and the Hidden Staircase Mystery
Nancy Drew and the Hidden Staircase
Dead Man's Chest
The Clue of the New Pin
The Clue of the Hidden Dragon
Hidden Staircase
Dangerous Curves
The Scarlet Slipper Mystery
The Mystery of the Blue Train
The Secret of Hidden Lake
Dead Man's Curve
The Mystery of the Phantom Flame
The Clue of the Black Widow
The Hidden Staircase
The Hidden Oracle
Hidden Treasures of the Sierra Madres
Hidden Treasures of the Caribbean
Hidden Treasures of the Sierra Madre
The Secret of the Unicorn Cave
The Clue of the New Pinhead
The Secret of the Old Clock
The Scarlet Slipper
Never Say Die
Hidden Staircase
Dead Man's Ransom
Nancy Drew and the Hidden Staircase Mystery
Scarlett's Hidden Treasure
The Clue of the New Pin
Dangerous Curves
Nancy Drew and the Hidden Staircase
The Dark Secret of Harvest Home
The Clue of the Hidden Dragon
Secret of the Old Clock
Dead Man's Chest
The Secret of Hidden Lake
The Hidden Oracle
The Hidden Staircase
The Clue of the Black Widow
Mystery at the Villa Rose
The Scarlet Slipper Mystery
Hidden Treasures of the Caribbean
Hidden Treasures of the Sierra Madres
Dead Man's Curve
The Mystery of the Blue Train
Hidden Treasures of the Sierra Madre
The Clue of the New Pinhead
Never Say Die
The Mystery of the Phantom Flame
Hidden Staircase
Dead Man's Mirror
Nightmare on 13th Street
The Scarlet Slipper
Nightmare at Shadow Woods
The Clue in the Mirror
Dead Man's Ransom
The Clue of the Hidden Dragon
Secret of the Old Clock
The Secret of the Old Clock
The Clue of the New Pin
The Hidden Oracle
Secret of the Scarlet Hand
Nancy Drew and the Hidden Staircase
The Hidden Staircase
Dead Man's Chest
Dangerous Curves
The Dark Secret of Harvest Home
Mystery at the Hotel Cortez
Hidden Treasures of the Caribbean
The Scarlet Slipper Mystery
The Hidden Staircase and the Hidden Treasure
Scarlett's Magical Mystery
Hidden Treasures of the Sierra Madre
Hidden Treasures of the Sierra Madres
Scarlett's Last Case
Dead Man's Curve
Nightmare on Elm Street
Mystery at the Villa Rose
Hidden Staircase
The Clue of the New Pinhead
Never Say Die
Dangerous Currency
The Mystery of the Blue Train
The Hidden Oracle
Dead Man's Mirror
The Scarlet Slipper
The Clue of the Black Widow
Secret of the Scarlet Hand
The Hidden Staircase
The Clue of the Hidden Dragon
The Secret of Hidden Lake
The Clue of the New Pin
Dead Man's Ransom
Secret of the Old Clock
Nancy Drew and the Hidden Staircase
Hidden Treasures of the Caribbean
The Clue of the Black Pearl
Dead Man's Chest
Hidden Staircase
Dangerous Curves
Hidden Treasures of the Sierra Madre
Mystery at the Villa Rose
The Scarlet Slipper Mystery
Hidden Treasures of the Sierra Madres
Mystery at the Hotel Cortez
Dangerous Currency
The Dark Secret of Harvest Home
The Clue of the New Pinhead
Scarlett's Magical Christmas
Scarlett's Secret Treasure
Scarlett's Great Escape!
The Hidden Oracle
Nightmare at Camp Lakeview
The Clue in the Mirror
Double Trouble in Paradise Falls
Dead Man's Curve
The Mystery at Lake Winnipesau
The Hidden Staircase
Never Say Die
Dead Man's Mirror
The Clue of the Hidden Dragon
Dangerous Liaisons
The Hidden Staircase and the Secret Garden
Scarlett's Secret
The Scarlet Slipper
Double Trouble in Paradise
The Secret of the Old Clock
The Hidden Staircase and the Hidden Tunnel
Hidden Treasures of the Caribbean
The Secret of Hidden Lake
Dangerous Curves!
Secret of the Scarlet Hand
Hidden Staircase
Mystery at Lake Winnipesauke
Dead Man's Ransom
Secret of the Old Clock
Dangerous Curves of the Moon
Scarlett's Magician