The Hidden Staircase
By Carolyn Keene
Nancy Drew investigates a haunted mansion while juggling a land dispute threatening her father, uncovering secrets that bring both mysteries together.
Worksheets
Strange events at Twin Elms—including swinging chandeliers, ghostly faces, and an owl in a locked room—deepen the haunting mystery while Nancy receives troubling news that her father may be delayed.
Nancy Drew learns about a haunted house mystery at Twin Elms while also worrying about her father’s safety after Nathan Gomber warns that a shady land deal with Willie Wharton could put him in danger.
Class 1
Class 2
Nancy uncovers clues suggesting her father has been kidnapped, linking the hoax telegram, a secret cave, and suspicious men to both the land dispute and the strange happenings at Twin Elms.
Class 3
As Nathan Gomber pressures Miss Flora to sell Twin Elms and suspicious activity continues, Nancy discovers a secret listening post, suspects Gomber of hiding both Willie Wharton and her father, and learns he bought Riverview Manor.
Class 4
Nancy finds a hidden staircase connecting Twin Elms and Riverview Manor, rescues her father from captivity, exposes Willie Wharton as the “ghost,” and sees Nathan Gomber arrested for his crimes.