The House on the Cliff

Hardy Boys 01: The Tower Treasure

Hardy Boys 02: The House on the Cliff

Hardy Boys 42: The Viking Symbol Mystery

Hardy Boys 56: The Jungle Pyramid

Hardy Boys 05: Hunting for Hidden Gold

Hardy Boys 14: The Hidden Harbor Mystery

Hardy Boys 28: The Sign of the Crooked Arrow

Hardy Boys 48: The Arctic Patrol Mystery

Hardy Boys 41: The Clue of the Screeching Owl

Hardy Boys 54: The Mysterious Caravan

Hardy Boys 53: The Clue of the Hissing Serpent

Hardy Boys 16: A Figure in Hiding

Hardy Boys 12: Footprints Under the Window

Hardy Boys 50: Danger on Vampire Trail

Hardy Boys 55: The Witchmaster's Key

Hardy Boys 49: The Bombay Boomerang

Hardy Boys 18: The Twisted Claw

Hardy Boys 08: The Mystery of Cabin Island