Thomas Browne Henry

A malicious alien organism from a distant planet crash lands on Earth and is discovered by a scientist, of whom the alien organism, named Gor - resembling a giant brain - takes over. Using the scientist's body, Gor attempts to use subversive mind control to take over Earth, until another brain - Vol - arrives on a mission to stop Gor, who Vol explains is a fugitive from their planet.

The U.S. military realizes its most advanced weapons are no match for an invading army of aliens determined to enslave Earth—and time is running out.

A U.S. spaceship returning from Venus carries a horrifying lizard-like creature that has the capability to destroy an entire city.