An occult investigator buys the 150-year-old skull of the Marquis de Sade, which turns out to be possessed by evil spirits.
After being thrown out of medical school for ethical violations, Dr. Peter Blood returns home to a small Cornish village, where he sets up a research laboratory in a secluded cave. There, he attempts to revive the dead, using kidnapped humans -- who he views as unworthy of life -- for their body parts, specifically, their hearts.
A glamour model helps Scotland Yard to catch a criminal gang.
