The Jungle Pyramid

When a million dollars in gold is stolen and a valuable ancient figurine vanishes, Mr. Hardy is called to investigate. His life is soon threatened, prompting him to enlist his sons, Frank and Joe, for help. Their global search for clues leads them from Switzerland to a perilous archaeological dig in the Yucatan jungle, where cunning adversaries are determined to stop them. The Hardy boys must outsmart their enemies to uncover the truth and survive a breathtaking adventure.