Book of Donmon Teith

During their father's investigation of a ruthless gang of terrorists, two young detectives face several adversaries.

During Mr. Hardy’s investigation of a ruthless gang of terrorists, Frank and Joe witness an explosion in the sky near an airborne dirigible owned by Quinn Air

While the Hardy Boys investigate the theft of valuable antique weather vanes from Pennnsylvania Dutch farms, their father tracks down a Pentagon employee who ha

Their search for an Easter Island idol takes the Hardy boys to Easter Island and on to investigate the theft of government material in Antarctica.