A scientist who is working on a cure for influenza is victimized by his unscrupulous boss, who releases the vaccine before it's ready, resulting in the death of the scientist's son.

After bringing his beautiful new wife Paula home to America from a remote island on which she was raised, Professor Norman Reed begins to feel the clash between his world of rational science and hers of bizarre dancing and freaky voodoo rituals. Norman's stuck-up friends also sense Paula's strangeness, and soon their meddling gossip and suspicious scheming push the poor woman to use her magic to defend herself and her husband – and maybe even to kill! Or is it just the power of suggestion...?

Attorney Wayne Fletcher and his secretary have an affair. When Wayne's wife is found smothered to death, he becomes the prime suspect. As the police investigate the murder, a psychic with questionable motives tries to contact the deceased woman. Soon, Wayne begins seeing visions of his dead wife, and other people involved with the case begin to be killed, one by one.