Regarding ghosts... When I was a little boy who grew up with my grandparents, my grandfather told a story one morning. He said that he heard knocking at the front door and went to answer it. No one was there. It happened again and no one was there. The third time he was his brother at the door who said, “Goodbye John.”. He received a letter a few weeks later from Czechoslovakia that his brother had passed. This was in the late sixties.
Very similar thing happened to me when my grandmother passed. Even stranger that night it happened to my brother on the other side of town. The next morning we both told our mom at different times without talking to each other. Granny told me it was going to be ok and she was fine. As when we both called her that night her phone was busy all that following day. On the third day we got word she had a heart attack and had the phone receiver in her hand.