The Tingler DVD

Dr Warren Chapin (Vincent Price) has made a surprising discovery--the spine-chilling sensation that people get when scared is due to a parasite that he dubs the "tingler". Chapin concludes that in extreme circumstances, prolonged fear can cause the creature to damage a person's spine and even cause death if the victim cannot scream, a theory that Oliver Higgins (Philip Coolidge) uses to deadly effect on his wife (Judith Evelyn). Soon the tingler that killed the woman is on the loose.