My mother told me about this when I was a teenager over 20 years ago. This took place way back in the 30's. I don't know what was wrong, but my mother had been very sick and was in bed. One night everyone was in bed and asleep except her. She was just lying in bed and she heard the dogs outside start barking. She noticed that they were barking on the side that faced a cemetery near their house.
The next thing she knew her Great-Grandmother who had died months before came walking through the wall! She noticed that her Great-Grandmother had on the same kind of clothes that she would normally wear around the house. It was dark in the room and my mother couldn't see into her face. She said it was like her Great-Grandmother didn't want her to see into her face. She kneeled down beside my mothers bed as if she were praying. She stayed there for a few minutes praying and then she got up turned around and walked back out through the wall, the dogs started barking again toward the cemetery.
My mother said her Great-Grandmother never said a word to her or looked at her. My mother was too shocked to even be afraid. And the next day she felt well enough to get out of bed.
This is a true story. My mother and Grandparents always told my brothers and myself about ghost encounters they said truly happened to them.