An obsessed scientist conducts profane experiments in evolution, eventually establishing himself as the self-styled demigod to a race of mutated, half-human abominations.

Working in Dr. Cranley's laboratory, scientist Jack Griffin was always given the latitude to conduct some of his own experiments.

Wrongfully convicted of a robbery and murder, Paul Lavond breaks out of prison with a genius scientist who has devised a way to shrink humans.

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.

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.

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.

Kitty Carroll, an attractive store model, volunteers to become a test subject for a machine that will make her invisible so that she can use her invisibility to exact revenge on her ex-boss.

A scientist keeps his wife young by killing, stealing the bodies of, and taking the gland fluid from virgin brides.

A millionaire's brain is preserved after his death by a scientist and his two assistants, only to create a telepathic monster.

Deranged scientist, Gustav Niemann, escapes from prison and overtakes the director of a traveling chamber of horrors, soon reviving the infamous Count Dracula, the frozen Frankenstein Monster, and the Wolf Man.

In 19th century England, a noted brain surgeon rescues a former student from being hanged on a false conviction for murder, and spirits him away to an ancient, repurposed abbey far in the countryside.

A brilliant surgeon encases his dead son's brain in a large robot body, with unintended results...

Industrialist François Delambre is called late at night by his sister-in-law, Helene Delambre, who tells him that she has just killed her husband, André. Reluctant at first, she eventually explains to the police that André invented a matter transportation apparatus and, while experimenting on himself, a fly entered the chamber during the matter transference.

A man and wife are terrorized by Mad Scientist Dr. Callistratus who was executed but has returned to life with a heart transplant.

An 1840s British surgeon, experiments with anesthetic gases in an effort to make surgery pain-free. While doing so, his demonstration before a panel of his peers ends in a horrific mishap with his patient awakening under the knife; he is forced to leave his position in disgrace.

Dr. Bonner plans to live forever through periodic gland transplants from younger, healthier human victims. Bonner looks about 40; he's really 104 years old.

A reporter is sent to interview a scientist working in his mountain laboratory.

A scientist invents a serum that keeps a dog's head alive after its body dies. When the scientist dies of a heart attack, his crazed assistant cuts off his head and, using the serum, keeps the doctor's head alive and forces it to help him on an experiment to give his hunchbacked nurse assistant a new body.

A mad scientist transforms a panther into a man-like creature that escapes and goes on a murderous rampage.

Dr. Génessier is riddled with guilt after an accident that he caused disfigures the face of his daughter, the once beautiful Christiane, who outsiders believe is dead.

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