A group of friends search for a young English Oxford student who has disappeared whilst researching in Greece. They are shocked to find that, wherever he has been, certain unsolved murders have taken place. Not believing that their friend could be the perpetrator of such acts, they press on with their search, finding him under the spell of a beautiful Vampire, whose blood-sucking methods include the use of sado-masochism. Believing they have killed her, the group return home, unaware that their friend is now a Vampire.
A group of Satanic hippies wreak havoc on a small town where a young boy, whose sister and grandfather were victimized by them, tries to get even - with deadly results.
A playboy adventure novelist joins his publisher on an expedition to Voodoo Island in the Caribbean, where a cancer researcher is being forced to turn the tribes-people into zombies.
A lonely housewife hears a man’s footsteps in the apartment above her late at night. The upstairs neighbor insists it is her husband who has returned from business but her explanations are soon contradicted. The woman begins to think her neighbor has murdered her husband.
Dr. Roger Girard is a rich scientist conducting experiments on head transplantation. His caretaker has a son, Danny, who, although fully grown, has the mind of child. One day an escaped psycho-killer invades Girard's home, killing Danny's father before being gunned down himself. With the maniac dying and Danny deeply unsettled by his father's death, Dr. Girard decides to take the final step and transplant the killer's head onto Danny's body.
A young, honeymooning couple stop for the night at an ancient castle. Unbeknownst to them, the castle is home to a horde of vampires who have their own plans for the couple.
The San Francisco area is beset by a series of seemingly random murders without motive or pattern. The police are taunted by phone calls and letters. Could the maniac be the violent truck driver, or the seemingly mild-mannered mailman, or even a cop?
Against a backdrop of Swingin' 60s London a young playboy type "steals" a beautiful Italian girl from her elderly date and suggests she comes back to his place for some good times. "His place" being owned by his father, a rich and respected solicitor. Unfortunately a couple of criminals have plans of their own, one for money, the other for revenge, and the lovers end up prisoners in a tense siege situation
Simon is a modern day warlock. Though he lives in a storm drain and sometimes talks to trees, he's deadly serious about his witchcraft. After being picked up for vagrancy, Simon spends a night in jail with Turk, a young hustler with connections to powerful people such as Hercules, an aging hipster who hires Simon to work one of his groovy parties. There he meets Linda, the DA's pill-popping daughter. In between romanic dallances and colorful sex magic ceremonies, Simon must contend with those who dare to challenge his magical prowess causing him to summon the dark world for his revenge.
In order to qualify to inherit the family fortune, the four heirs must spend the night in the family estate. However, during the night someone starts killing them off.
A wealthy Englishman finds his third wife dead. After the police discover that his first two wives had also died suddenly, an investigation is launched. Meanwhile, a new neighbor moves in and becomes very interested in him.
The inhabitants of a small, remote island have been practicing voodoo rites and worshipping an evil priest named Damballah for years, but the local law officials generally turn a blind eye to this death cult's bizarre activities. Captain Labesch arrives from the mainland, determined to crack down on the island's lawlessness and clean up the ineffectual, hard-drinking police force. He appeals for assistance from wealthy plantation tycoon Carl Van Molder, who owns nearly half of the island and wields a great deal of influence over the population. Van Molder has made the study of parapsychology his life's work and believes in the secret powers of the mind. He warns Labesch not to interfere with this forgotten island's ancient ways. Also visiting is Van Molder's niece, Annabella, a temperance crusader who wants her uncle to help fund the International Anti-Saloon League. She falls in love with handsome police lieutenant Andrew Wilhelm
After a schoolgirl is raped while taking a short cut through the local woods, and another murdered a few days later, the police are baffled. With the help of a reporter, and against the wishes of a local psychologist, a young schoolteacher uses herself as bait to lure the perpetrator out.
Hungary, XVII century. After being widowed, the old countess Elizabeth Nádasdy, of the Báthory lineage, fortunately discovers a way to become young again; but the price to be paid by those around her will be high and bloody.
After a landsman in 18th century England discovers a corpse covered in fur buried in a field, the town becomes infected by "the devil's skin," leading the local children to engage in demonic rituals and criminal behavior.