A pathologist, Dr. Warren Chapin (played by Vincent Price), discovers that the tingling of the spine in states of extreme fear is due to the growth of a "tin…

病理学家沃伦·查宾博士（文森特·普莱斯饰演）发现，在极度恐惧的状态下，脊椎的刺痛是由于“刺痛者”的生长造成的，这种脊椎寄生虫可以杀死宿主，除非它被尖叫摧毁。