A chemist carries out a bizarre experiment with his own head.
Tampering with life and death, Henry Frankenstein pieces together salvaged body parts to bring a human monster to life; the mad scientist's dreams are shattered by his creation's violent rage as the monster awakens to a world in which he is unwelcome.
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.
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...
The mice are on the loose after hours in a doctor's office, playing with the various pieces of medical apparatus. Susie Mouse is caged for research until her lover Johnnie frees her. A mouse orchestra plays a swinging wedding song. But throughout, a cat is stalking...
Four explorers are summoned to Peru by the brilliant physicist Dr Thorkel. They discover a rich source of radium and a half-mad Thorkel who shrinks them down to one-fifth their normal size when they threaten to stop his unorthodox experimentation.
After a young woman is coerced into prostitution and her brother framed for murder by an organized crime syndicate, retribution in the form of an ape visits the mobsters.
Mad scientist turns a man into an electrically-controlled monster to do his bidding.
Grave robbers open the grave of the wolf man and awaken him. He doesn't like the idea of being immortal and killing people when the moon is full so tries to find Dr. Frankenstein, in the hopes that the doctor can cure him. Dr. Frankenstein has died; however, his monster is found.
A university chemistry professor experiments with an ancient Mayan gas on a medical student, turning the would-be surgeon into a murdering ghoul as part of a plan to steal his lover.
Poor physics student Marie is studying at the Sorbonne in 1890s Paris. One of the few women studying in her field, Marie encounters skepticism concerning her abilities, but is eventually offered a research placement in Pierre Curie's lab. The scientists soon fall in love and embark on a shared quest to extract, from a particular type of rock, a new chemical element they have named radium. However, their research puts them on the brink of professional failure.
Once again Paula the ape woman is brought back to life, this time by a mad doctor and his disfigured assistant, who also kidnaps a nurse in order to have a female blood donor.
A scientist working on cures for rare afflictions, such as a bone softening agent made from molds to allow him to correct the spinal deformity of his nurse, finds the physical causes of lycanthropy in wolf-man Larry Talbot and of vampirism in Count Dracula, but himself becomes afflicted with homicidal madness while exchanging blood with Dracula.
A woman uncovers deadly secrets when she visits her late husband's family.
Cantinflas is the apprentice of a renowned scientist, Prof. Arquimides Monteagudo (Carlos Martinez Baena). But Cantinflas has the soul of a poet rather than a serious researcher, and he wants to find the formula that achieves the immortality of the roses. Nevertheless, after the death of Prof. Monteagudo, Cantinflas will be chased by a ferocious corporative group, who wants to steal the secret formula of a cheaper fuel named "carburex", because they think that our friend is the only person who knows the composition
Not a feature, but an edited version of the 1939 serial "The Phantom Creeps" which was released to TV in 1949.
A small-town reporter investigates a mysterious group holed up in a country lodge.
A New York sculptor who opens a wax museum to showcase the likenesses of famous historical figures runs into trouble with his business partner, who demands that the exhibits become more extreme in order to increase profits.
A scientist develops a formula which will cause animals to regress to the form of their primitive ancestors, and tries it on himself with disastrous results.
Slip, Sach and the rest of the Bowery Boys enter a haunted house, where they engage in slapstick with a gorilla, a robot and a vampire