Carolyn G. Keene

A very well recieved series by Carolyn G. Keene are the books, featuring tropes. The most popular books are 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, which was published in 2022.