After returning from a mission to Venus, an astronaut can't seem to stay warm enough and has strange dreams about encountering a wraith-like being outside his spaceship window.

A couple of motorists stranded in the desert are stalked by a bunch of tumbleweeds.

An alien offers his technical knowledge of how to build a ray gun in exchange for a scientist's ability to feel emotions.

A dying astronaut agrees to have his brain implanted into a robot body.