Sixties couples Michael and Donna and Paul and Erica become involved with the intense Count Yorga at a Los Angeles séance, the Count having latterly been involved with Erica's just-dead mother. After taking the Count home, Paul and Erica are waylayed, and next day a listless Erica is diagnosed by their doctor as having lost a lot of blood. When she is later found feasting on the family cat the doctor becomes convinced vampirism is at work, and that its focus is Count Yorga and his large isolated house.
While dabbling in Satanism, Count Karstein resurrects Mircalla Karnstein who initiates him into vampirism. As a rash of deaths afflicts the village, Gustav the head of Puritan group leads his men to seek out and destroy the pestilence. One of his twin nieces has become inflicted with the witchcraft but Gustav's zeal and venom has trapped the innocent Maria, threatening her with a tortuous execution, whilst Frieda remains free to continue her orgy of evil.
A magician who has been turned into a raven turns to a former sorcerer for help.
A mad scientist creates a hideous monster to carry out his murderous plans...
In the sixteenth century, Francis Barnard travels to Spain to clarify the strange circumstances of his sister's death after she had married the son of a cruel Spanish Inquisitor.
A widow deceives her late husband's mother and brothers into thinking he's still alive when she attends the yearly memorial to his drowned sister, hoping to secure his inheritance, but her cunning is no match for the demented, axe-wielding thing roaming the grounds of the family's Irish estate.
In a 16th-century European town, the ruling family has been given a prophecy that, should there ever be twin boys born, the younger will murder the older; so is dismayed when twins are born to the popular baron. The older grows to be a selfish, slovenly man, who inherits the castle at his father's death and becomes ruler over the formerly happy villagers. He enjoys his power until he learns his younger brother is returning from abroad and, afraid of the prophecy, he determines to murder his sibling, hide his body in the "black room" - an old torture chamber sealed away behind the fireplace - and then impersonate him, right down to his withered arm. In this way he hopes to not only avoid the prophecy, but also escape consequences of his other criminal deeds and obtain marriage to a local girl of the nobility...
Lady Caroline Faye meets Lord Vane Brecon and is attracted to him. When she finds out that he is being accused of a murder he did not commit, she sets out to prove him innocent
Baron von Sepper is an Austrian aristocrat noted for his blue-toned beard, and his appetite for beautiful wives. His latest spouse, an American beauty named Anne, discovers a vault in his castle that's filled with the frozen bodies of several beautiful women.
When an eccentric clan living in virtual isolation in an Italian castle finds their family togetherness threatened by the arrival of three mysterious strangers, they summon up some supernatural protectors to fend off the barbarian invasions.
An apathetic police unit brings in a mysterious young woman to help solve a grisly homicide.
In an ancient castle, a mad scientist is trying to revive his dead daughter by an operation, but there are certain body parts he needs that he can't get. His problem is solved when a group of drunken party-goers stumble into his castle.
A group of rich businessmen and military officers who are partying in an old castle are spared when a nuclear war ravages the earth. When they venture out into the nearest town to search for food and supplies, they find most of the residents blinded, and soon they discover the existence of a sinister group called The People Who Own The Dark.
An evil witch brings back to life the infamous Elizabeth Bathory, who was executed several hundred years previously for murdering young women and bathing in their blood.
An account of the life and work of controversial German orchestra conductor Herbert von Karajan (1908-89), celebrated as one of the greatest musicians of the twentieth century.
A photographer and his models go to an old, abandoned castle for a photo shoot. Unbeknownst to them, the castle is inhabited by a lunatic who believes himself to be the reincarnated spirit of a 17th-century executioner whose job it is to protect the castle against intruders.
A countess from Transylvania seeks a psychiatrist’s help to cure her vampiric cravings.
A student and her photographer boyfriend visit an island off of Massachusetts to research a hotel supposedly haunted by a witch.
A young man drives along a country road in his new sports car, until he is waved down by a stranded mysterious woman, with a love of speed and a lust for death.
Radio personalities Larry Abbot and Vickie Pearle are stars of a mystery show. Since they announced their engagement, Larry has been plagued by speech problems and, seeking out an unconventional cure, he returns to his boyhood home, a mansion in the countryside, bringing Vickie along. Larry reunites with numerous family members, but discovers that there are sinister things afoot within the walls of the creepy estate.