Thirst (1979)

Thirst (1979) movie poster.

Movie (1979)

Starring:
Chantal Contouri (Kate Davis)
Shirley Cameron (Mrs. Barker)
Max Phipps (Mr. Hodge)
Henry Silva (Dr. Gauss)
Rod Mullinar (Derek)
David Hemmings (Dr. Fraser)

The descendant of Elizabeth Bathory is abducted by a cult of self-proclaimed supermen who achieve this state of superiority by drinking from the "blood cows" (read: people) kept at the "dairy farm", and they try to get her to join them.