B&W: Hand From Grave To Scare Rich Woman To Death

by Anonymous

Looking for a 40's or 50's black and white film about a middle-aged wealthy woman just discharged from a mental hospital, walking around her estate when she faintly hears 'Help me' and as she grows nearer to it, a a hand suddenly plunges up out of the grave and grabs her ankle.

A young man and girl want the woman to die so they can have her money.

What is the title of this movie please?