A young woman inherits an old hotel in Louisiana where, following a series of supernatural "accidents", she learns that the building was built over one of the entrances to Hell.

A psychic participates in a séance where she sees a vision of a Dunwich priest hanging himself in a church cemetery, causing her to die of fright. New York City reporter Peter Bell investigates the séance and learns that the priest's suicide has somehow opened a portal to Hell and must be sealed by All Saints Day, or else the dead will...

After a doctor kills his mistress and himself while researching the mysterious previous owner of his Boston home, his colleague, Dr. Norman Boyle, takes over his research and moves his family from New York City to the Boston mansion. Soon after, Boyle's young son Bob becomes plagued by visions of a young girl, who warns him of the dang...

A reporter and a promiscuous young woman try to solve a series of child killings in a remote southern Italian town rife with superstition and a distrust of outsiders.

A burned-out New York police detective teams up with a college psychoanalyst to track down a vicious serial killer randomly stalking and killing various young women around the city.