The Password to Larkspur Lane (Nancy Drew, Book 10)

Blue bells will be singing horses! This strange message, attached to the leg of a wounded homing pigeon, involves Nancy Drew in a dangerous mission. Somewhere an elderly woman is being held prisoner in a mansion, and  Nancy is determined to find and free her. Meanwhile, the young detective’s close friend, Helen, begs her to solve a second mystery. Helen’s grandparents, the Cornings, are frightened by a sinister wheel of blue fire that appears after dark in the woods outside their home at lonely Sylvan Lake. When Nancy discovers the significance of the eerie signal, she also learns that her two mysteries are connected.

• The Sign of the Twisted Candles (Nancy Drew, Book 9)
• Nancy's Mysterious Letter (Nancy Drew Mystery Stories, Book 8)
• The Clue in the Diary
• The Secret of Red Gate Farm (Nancy Drew Mystery Stories, Book 6)
• The Clue of the Broken Locket (Nancy Drew, Book 11)
• The Secret of Shadow Ranch
• The Message in the Hollow Oak (Nancy Drew, Book 12)
• Nancy Drew Set - Books 11-20
• The Mystery at Lilac Inn (Nancy Drew, Book 4)
• Nancy Drew Books 11-20 The Nancy Drew Mystery Stories Collection Box Set