• The Hidden Staircase
• The Mystery at Lilac Inn
• The Clue of the Leaning Chimney
• Mystery of Crocodile Island
• The Clue in the Crumbling Wall
• The Mystery of the Ivory Charm
• The Clue of the Whistling Bagpipes
• The Secret of Mirror Bay
• The Moonstone Castle Mystery
• Mystery of the Glowing Eye
• Mystery of the Brass-Bound Trunk
• The Scarlet Slipper Mystery
• The Secret of the Wooden Lady
• The Triple Hoax
• The Secret of Red Gate Farm
• The Clue in the Crossword Cipher
• The Secret of the Golden Pavillion
• Nancy's Mysterious Letter
• The Ringmaster's Secret
• The Haunted Bridge
• The Whispering Statue
• The Clue in the Old Album
• The Quest of the Missing Map
• The Spider Sapphire Mystery
• The Sky Phantom
• The Clue of the Black Keys
• The Clue in the Diary
• The Mysterious Mannequin
• The Clue of the Tapping Heels
• The Sign of the Twisted Candles
• The Clue of the Broken Locket
• The Witch Tree Symbol
• The Clue in the Old Stagecoach
• The Haunted Showboat
• Mystery of the Moss-Covered Mansion
• The Clue of the Velvet Mask
• The Strange Message in the Parchment
• The Mystery of the Fire Dragon
• The Invisible Intruder
• The Twin Dilemma
• The Double Jinx Mystery
• The Secret in the Old Lace
• The Secret of Shadow Ranch
• Captive Witness
• The Secret in the Old Attic
• Password to Larkspur Lane
• The Kachina Doll Mystery
• The Thirteenth Pearl
• The Hidden Window Mystery
• Mystery of the Tolling Bell
• The Clue in the Jewel Box
• The Secret of the Forgotten City
• The Bungalow Mystery