Hardy Boys (53-66) 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65 and 66. Hardcover ~ 2003

Why is a wealthy sportsman so frightened by the serpent design on a mysterious balloon that he begs Frank and Joe Hardy to protect him? And who stole the ancient life-size chess king which is to be presented to the winner of the world chess championship? Targets of diabolical enemies, Frank and Joe find a clue that leads them across the Pacific to Hong Kong to help the police smash an international criminal organization.