A scientist spills a new serum in his lab, accidentally inhales its fumes, and turns into a murderous monster who kills anyone he touches.

A government space experiment into the effects of cosmic rays on animal life goes horribly wrong, creating a mutant monster that terrorizes a rural community.

A young woman discovers she is the daughter of the infamous Dr. Jekyll, and begins to believe that she may also have a split personality, one of whom is a ruthless killer.

A space ship crash lands on the third planet of a distant solar system, killing all hands except for a young boy named Tang. The rescue ship arrives some 20 years later. One of the crew, a girl named Linda meets Tang and falls in love with him. They are attacked by the native humanoids of the planet and many of them are killed off. Also, the crew encounters many strange beasts on this strange, but somewhat familiar world.

A young man searches for his brother's killer with the help of a gunfighter, a native woman and a traveling medicine man.

A crooked police detective masterminds a robbery then fights to keep the stolen money.

An evil alien brain, bent on world domination, takes over the body of an atomic scientist, while a "good" alien brain inhabits the body of the scientist's dog and waits for an opportunity to defeat the evil brain.

A space expedition to Uranus is menaced by a giant brain that can make illusions come true.

A psychic helps police solve murders by mentally linking with the murderer. Then she discovers a murderer with the same talent, who wants to share the fear of his victims with her!

Aliens, contacting scientist Adam Penner, inform him that they have been on the moon for twenty thousand years, undetected due to their invisibility, and have now decided to annihilate humanity unless all the nations of earth surrender immediately. Sequestered in an impregnable laboratory trying to find the aliens' weakness, Penner, his daughter, a no-nonsense army major and a squeamish scientist are attacked from outside by the aliens, who have occupied the bodies of the recently deceased.

After the Civil War, ex-Union Colonel John Henry Thomas and ex-Confederate Colonel James Langdon are leading two disparate groups of people through strife-torn Mexico. John Henry and company are bringing horses to the unpopular Mexican government for $35 a head while Langdon is leading a contingent of displaced southerners, who are looking for a new life in Mexico after losing their property to carpetbaggers. The two men are eventually forced to mend their differences in order to fight off both bandits and revolutionaries, as they try to lead their friends and kin to safety.

An aging Texas cattle man who has outlived his time swings into action when outlaws kidnap his grandson.

A misguided scientist enables an alien from Venus named Zontar to come to earth in order to "help solve man's problems". However, as soon as Zontar arrives on Earth, it quickly becomes obvious that the three-eyed, bat-winged, skeletal black creature has a hidden agenda.