A "National Geographic" film crew is taken hostage by an insane hunter, who takes them along on his quest to capture the world's largest - and deadliest - snake.

An American family on holiday in Africa becomes lost in a game reserve and stalked by vicious killer lions.

A group of American tourists heading down an African river make a brief stop at Snake Island, an island that has been virtually abandoned for years. When they end up getting trapped on the island overnight, they find thousands of deadly snakes intent on reclaiming the tropical island for themselves.

When her archaeologist father disappears on an expedition, Wanda sets out to look for him. What she finds is a secret underground world, where no one believes in life on the surface and where she and her father are taken for spies.

A CIA agent is sent to get Professor Braun before the KGB can seize him as the Prof's knowledge, together with a recently stolen diamond, could be used to make a laser cannon.