A remake of "The Man in Half Moon Street" (1945) (qv.). Dr. Bonner plans to live forever through periodic gland transplants from younger, healthier human victims. Bonner looks about 40; he's really 104 years old. But people are starting to get suspicious, and he may not make 200.

An alien narrates the story of his dying planet, his and his people's visitations to Earth and Earth's self-made demise, while human astronauts in space are attempting to find an alternate planet for surviving humans to live on.

Bywater's native Seminole Indians believe the swamp will be bloodily revenged by its guardian spirit, a 'dark warrior', for its 'rape' by Frederic and son Jake Schist's oil-drilling, sold out by their own late chief Ted Sallis. The rig is illegally protested against by hot-head ecologists, who get blamed for vandalism on the site. New, outsider sheriff Kyle Williams suspects immediately local adolescent Billy James wasn't eaten during love-making there by a cayman but by a mysterious monster, which already made and soon makes new bloody victims in weird, inconsistent ways. Several people add to the danger.

Captain Saxon, and agent for the top secret Omega agency, has been given the assignment of tracking down and either capturing or killing the crew members of a secret space mission who returned to Earth against orders. It seems that they were all infected with an alien parasite, and they were trying to bring its eggs back to Earth. The eggs were lost in an accident, and both Saxon and the astronauts are trying to locate them. What could the government want them for?

A devilish creature escapes from a carnival to wreak havoc on a small town.

While on a fishing trip, Harry Baldwin (Ray Milland) and his family hear an explosion and realize that Los Angeles has been leveled by a nuclear attack. Looters and killers are everywhere. Escaping to the hills with his family, he sets about the business of surviving in a world where, he knows, the old ideals of humanity will be first casualties. Not one to give up, he holds up a store for supplies and hides the family in a cave.