A social misfit, Willard is made fun of by his co-workers, and squeezed out of the company started by his deceased father by his boss. His only friends are a couple of rats he raised at home, Ben and Socrates. However, when one of them is killed at work, he goes on a rampage using his rats to attack those who have been tormenting him.
An American actress inherits a castle in Transylvania. What she doesn't know is that her ancestor, the Baroness Catali, was in actuality a vampire countess, and emerges from her tomb to ravage the nearby village and Catholic seminary.
A cancer researcher on a remote Caribbean island discovers that by treating the natives with snake venom he can turn them into bug-eyed zombies. Uninterested in this information, the unfortunate man is forced by his evil employer to create an army of the creatures in order to conquer the world.
After her prostitute mother and her john are beaten to death while they are asleep in bed, teen-aged Ellie Masters is sent to an isolated orphanage run by a mysterious woman and her handyman, both whom she comes to suspect are hiding dark secrets.
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.
When socialite and heiress Julie Wardh begins receiving blackmail letters attributed to a mysterious serial killer, she suspects her cruel and sadistic former lover Jean is behind them. With her husband Neil frequently out of town, she falls into the arms of her friend's cousin George, and as the unknown assassin begins to make his move, she fears that one of the three men in her life may be the killer.
A family of vampires takes over an estate known as Carfax Abbey. Since inbreeding is destroying the family line, they need new blood to keep the family going, so they set out to find new sources.
A deranged 15th Century prison colony chaplain exploits his power to get money for his church including murder and grave robbing committed by his vampire mistress and one-eyed hunchback assistant.
Two young English women go on a cycling tour of the French countryside. When one of them goes missing, the other begins to search for her. But who can she trust?
An American writer living in Rome witnesses an attempted murder that is connected to an ongoing killing spree in the city, and conducts his own investigation despite himself and his girlfriend being targeted by the killer.
In 1700s Austria, a witch-hunter's apprentice has doubts about the righteousness of witch-hunting when he witnesses the brutality, the injustice, the falsehood, the torture and the arbitrary killing that go with the job.
On an island somewhere in the Caribbean a professor is experimenting with mankind. Meanwhile, The Red Lips are moonlighting on a striptease world tour, but as soon as they hit the stage, the girls are up to their pasties in stiffs, Satanists and Sapphic sadists, all after the professor's secret formula for human clones!