After she is assaulted in several horrific sequences, seemingly provincial farm girl Ingrid (May Britt) becomes convinced that her slovenly uncle Carl (Cameron Mitchell) is her assailant, and is the serial rapist and killer responsible for a string of local bloody scissor murders. She’s afraid to tell local sheriff Aldo Ray, a sort of father figure for her, even after she is attacked again, and suffers a total psychic breakdown.

This straightforward-sounding narrative is actually incredibly difficult to follow, as…