Pigs (1973)

Lynn Webster is an insane young woman who escapes from a mental hospital where she was committed for killing her abusive father who had raped her. Stealing a nurse's uniform, car keys and car, Lynn ends up in a small rural California town where she meets and shacks up with Zambrini, an old farmer and ex-circus star who runs the local roadside diner. Zambrini also owns a sounder of 12 pigs that he keeps in a pigpen behind his diner which have somehow developed a taste for human flesh and nothing else will satisfy them. When Lynn kills a local man who found the discarded nurse's uniform in a field and then tries to seduce her in her room at the diner in exchange for keeping quiet about what he had found, in which said seduction and the subsequent lovemaking that follows it causes her to remember her dead father and what he had done to her, Zambrini helps her out and disposes of his corpse by feeding it to the pigs. Investigating the man's disappearance, the local sheriff Dan Cole eventually becomes suspicious of Lynn's past and Jess Winter, a private investigator who has been hired by the mental hospital to find her, slowly closes in on Lynn.