An ordinary day's hike gets rough when two youngsters escape from the main group into the woods and, after finding a grotto, discover that there is more to it than just darkness.
A hunchback working in a morgue falls in love with a sick woman. He goes berserk when she dies and seeks help from a scientist to bring her back from the dead.
After an aging voodoo priestess dies, her arrogant son Willis Daniel's believes he is next in line to lead. He is outraged when Lisa, his mother's adopted apprentice is chosen as the leader. Willis seeks revenge by reviving the African prince Blacula — but soon finds that he cannot control him.
The legendary Loreley has been living for centuries in a grotto beneath the river Rhein in Germany. Every night when the moon is full, she turns into a reptile-like creature craving for human blood. When one girl after another of a nearby boarding school is killed by her, a hunter named Sigurd is engaged to kill the monster.
In the late 18th century, two newlyweds move into the stately mansion of the Fengriffen family. The young bride is victim of terrifying visions and apparitions, threatening her very sanity. A London psychiatrist comes to her help and uncovers the terrible secret that haunts the estate.
In Medieval France a warlock is beheaded and his wife is tortured and executed. Hundreds of years later, an isolated group of people discover his head buried on their property. Soon it comes back to life, possessing people and using them to commit sacrifices and to search for the rest of his body.
A social worker who recently lost her husband investigates the strange Wadsworth family. The Wadsworths might not seem too unusual to hear about them at first - consisting of the mother, two grown daughters and the diaper-clad, bottle-sucking baby. The problem is, the baby is twenty-one years old.
When various trustees of the Van Traylen Orphanage begin dying in close order, it's at first written off as a coincidence. But, when a school bus accident very nearly takes out three more of them along with a group of orphans, Col. Bingham and his pathologist friend, Mark, begin looking into the deaths. They come to think the answer lies with one of the girls on the bus, who has vivid memories of things she could not possibly have seen.
Lorraine and Mark enter the world of witchcraft where Mara foretells the future and helps them remember their past lives. When a series of mysterious murders begin to occur, they turn to Dr. Helsford for advice.
A scientist comes to believe that evil is a disease of the blood and that the flesh of a skeleton he has brought back from New Guinea contains it in a pure form. Convinced that his wife, a Folies Bergere dancer who went insane, manifested this evil, he is terrified that it will be passed on to their daughter. He tries to use the skeleton's blood to immunise her against this eventuality, but his attempt has anything but the desired result.
A young psychiatrist applies for a job at a mental asylum and must pass a test by interviewing four patients. He must figure out which of the patients, is in fact, the doctor that he would be replacing if hired.
A physician discovers that two children are being kept virtually imprisoned in their house by their father. He investigates, and discovers a web of sex, incest and satanic possession.
Mysterious and unearthly deaths start to occur while Professor Saxton is transporting the frozen remains of a primitive humanoid creature he found in Manchuria back to Europe.
A mentally and physically scarred monster rampages through the old west, killing and raping as he seeks to meet up with his cohorts in a bank robbery. He is pursued by a vengeful posse who have no thoughts of bringing him back for justice.
A wealthy woman, vacationing in Acapulco with her stuffy husband, stumbles upon evidence that she is being stalked by an international jewel thief and murderer.
An 18th century African prince is turned into a vampire while visiting Transylvania. Two centuries later, he rises from his coffin attacking various residents of Los Angeles and meets Tina, a woman who he believes is the reincarnation of his deceased wife.