A mentally challenged girl proves herself to be every bit as capable as her “perfect” sister when she moves into an apartment and begins going to college.

An anorexic young woman escapes from a psychiatric clinic and meets a young man who wants to help. She is caught and returned to her parents, who are soon beheaded by a garrotting stranger making the rounds about town, apparently striking only when it rains. The orphaned young woman and her new lover launch their own investigation and are endangered when a link is discovered with the victims and a particular operation performed years before.