Amazon Adventure:
Hal and Roger Hunt crash-land into the middle of a pioneering expedition to the unmapped regions of the greatest jungle on earth: the Amazon.

South Sea Adventure:
Hal and Roger Hunt sink deep into danger when a specimen-collecting trip takes them into the lost world of the South Seas.

Underwater Adventure:
Hal and Roger Hunt dive into danger when they join the Oceanographic institute as part of an underwater operation in the South Seas.

Volcano Adventure:
Hal and Roger Hunt embark on an earth-shattering expedition when they join forces with world-famous volcanologist Dr Dan Adams.

Whale Adventure:
Hal and Roger Hunt are hoping to have a whale of a time when they agree to join the crew of a whaling ship.

African Adventure:
Hal and Roger Hunt are on the trail of a vicious man-eating leopard. Yet they are also being hunted themselves, by a merciless band of killers known as the Leopard Society.

Elephant Adventure:
Hal and Roger Hunt are on an awesome African adventure to track down the rare great white elephant. The brothers coolly tackle their task – despite doom-laden prophecies from mumbo, a Watussi chieftain – and as the temperature rises . . . the danger-level intensifies.

tags;Willard Price