All hardcover, brand new volumes of the numbered "Flashlight" editions. All fifty-six titles in print. #01: Secret of the Old Clock.
Secret of Red Gate Farm. The Clue of the Diary. The Sign of the Twisted Candles.
The Clue of the Broken Locket. The Message in the Hollow Oak. The Mystery of the Ivory Charm. The Clue of the Tapping Heels.
Mystery of the Brass-Bound Trunk. Mystery of the Moss-Covered Mansion.
The Quest of the Missing Map. The Clue in the Jewel Box.
The Secret in the Old Attic. The Clue in the Crumbling Wall. Mystery of the Tolling Bell. The Clue in the Old Album. The Ghost of Blackwood Hall. The Clue of the Leaning Chimney. The Secret of the Wooden Lady. The Clue of the Black Keys. Mystery at the Ski Jump. The Clue of the Velvet Mask. The Secret of the Golden Pavilion.The Clue in the Old Stagecoach. The Mystery of the Fire Dragon. The Clue of the Dancing Puppet.
The Clue of the Whistling Bagpipes. The Phantom of Pine Hill. The Mystery of the 99 Steps. The Clue in the Crossword Cipher.
The Secret of Mirror Bay. Mystery of the Glowing Eye.
The Secret of the Forgotten City. The Strange Message in the Parcment. The books do not come in a slipcase. Already have some of the titles? I would be happy to customize a set for anyone with any combination of volumes you would want.