The best Boris Karloff’s science fiction movies

After recovering from injuries sustained in the mob attack upon himself and his creation, Dr. Frankenstein falls under the control of his former mentor, Dr. Pretorius, who insists the now-chastened doctor resume his experiments in creating new life. Meanwhile, the Monster remains on the run from those who wish to destroy him without understanding that his intentions are generally good despite his lack of socialization and self-control.

Dr. Henry Frankenstein attempts to create life by assembling a creature from body parts of the deceased. Aided by his loyal misshapen assistant, Fritz, Frankenstein succeeds in animating his monster, but, confused and traumatized, it escapes into the countryside and begins to wreak havoc. Frankenstein searches for the elusive being and eventually must confront his tormented creation.

Down-on-his-luck John Ellman is framed for a judge's murder. After he's convicted and sentenced to death, witnesses come forth and prove his innocence. But it was too late for a stay to be granted and Ellman is executed. A doctor uses an experimental procedure to restore him to life, though the full outcome is other than expected.

One of the sons of Frankenstein finds his father's monster in a coma and revives him, only to find out he is controlled by Ygor who is bent on revenge.

University professor George Kingsley is struck by gangsters while crossing the street, leaving him with brain damage and one of the gangsters, Cannon, paralyzed. Kingsley's friend Dr. Sovac attends to both men, and when Cannon offers him a reward for aiding his recovery, Kovac transplants part of Cannon's brain into the dying Kingsley's skull, creating a dual personality.

The villainous Dr. Fu Manchu races against a team of Englishmen to find the tomb of Ghengis Khan, because he wants to use the relics to cause an uprising in the East to wipe out the white race.

Dr. Bernard Adrian is a kindly scientist who seeks to cure a young woman's polio. He needs human spinal fluid to complete the formula for his experimental serum. Meanwhile, a vicious circus ape has broken out of its cage, and is terrorizing the townspeople. Can there be a connection?

A young man visits his fiancé's estate to discover that her wheelchair-bound scientist father has discovered a meteorite that emits mutating radiation rays that have turned the plants in his greenhouse to giants. When his own wife falls victim to this mysterious power, the old man takes it upon himself to destroy the glowing object with disastrous results.

Abbott and Costello, two bumbling American cops on exchange in London, hunt for Mr. Hyde—the monster that has been terrorizing the city.

The baron's grandson rents the family castle to a TV crew to fund his atomic revival of the family monster.

A physician on death row for a mercy killing is allowed to experiment on a serum using a criminals' blood, but secretly tests it on himself. He gets a pardon, but finds out he's become a Jekyll-&-Hyde.

Dr. Janos Rukh discovers a certain type of radium that has almost magical healing properties. But the element has a dangerous side, too, and it has already started affecting Rukh. Consumed by paranoia, he begins to suspect that his wife is having an affair. Wild for revenge, Rukh hatches a deadly plot...using his own poisoned body as a weapon to kill.

The inventor of a new top-of-the-line burglar alarm system is kidnapped by a gang in order to get him to help them commit robberies.

Dr. Henryk Savaard is a scientist working on experiments to restore life to the dead. When he is unjustly hanged for murder, he is brought back to life by his trusted assistant. Re-animated he turns decidedly nasty and sets about murdering the jury that convicted him.

Dr. Leon Kravaal develops a potential cure for cancer, which involves freezing the patient. But an experiment goes awry when authorities believe Kravaal has killed a patient. Kravaal freezes the officials, along with himself. Years later, they are discovered and revived in hopes that Kravaal can indeed complete his cure. But human greed and weakness compound to disrupt the project.

Dr. Laurence, a once-respectable scientist, begins to research the origin of the mind and the soul. The science community rejects him, and he risks losing everything for which he has worked. He begins to use his discoveries to save his research and further his own causes, thereby becoming... a Mad Scientist, almost unstoppable...

A scientist kills innocent victims in his efforts to communicate with his late wife.

In the late 1800's, Boris Karloff has discovered a way to use nuclear power. He creates a beam weapon and blows up a big rock. Outer space aliens are scared and one alien who looks a lot like James Cameron with a big fake nose only this one isn't fake lands and brings other aliens who take over the bodies of Karloff and his assistant. The assistant is a Jack the Ripper style killer who has done a few nasty murders which have riled the townsfolk. The body-snatched bodies become radioactive and start killing flowers and other stuff (but don't die themselves) and some stuff happens and in the end Karloff destroys the beam weapon equipment (and his lab and house), then the aliens leave and warn us that if anyone ever does it again there will be trouble.