The Screaming Woman (1972) Olivia de Havilland

A wealthy former mental patient goes home to her estate to rest and recuperate. While walking the grounds one day she hears the screams of a woman coming from underneath the ground who has been buried alive. Her family, however, refuses to believe her story, and sees the incident as an opportunity to prove the woman's mind has snapped so they can take control of her money.

[RickBerg-bk]

I remember seeing this when it came out. Plot was far fetched.

[kathleenanderson]

Why didn't she start to dig the woman up instead of running all that way home ?