Spider Baby or, The Maddest Story Ever Told (1967)
A caretaker devotes himself to three demented siblings after their father's death. But then money-hungry relatives show up to usurp their inheritance. Preserved by the Academy Film Archive in 2013.
Directed by: Jack Hill
Starring: Lon Chaney Jr., Carol Ohmart, Quinn K. Redeker, Beverly Washburn, Jill Banner, Sid Haig
Links: IMDb, Movie posters, Movie stills